Mercedes-Benz GLS X167 Front Upper Arms are important components of the front suspension system that help guide wheel movement, maintain suspension geometry and support controlled steering behaviour in Mercedes-Benz GLS X167 models from 2019 – 2026. This set of 2 corresponds with OEM reference numbers A1673301300 and A1673301400. These components may also be searched for as Mercedes GLS X167 upper control arms, Mercedes X167 upper wishbone arms, GLS front upper suspension arms or replacement front control arms. The upper arms help locate the front wheel assembly relative to the vehicle chassis while allowing the suspension to move through its intended range as road conditions change. During acceleration, braking, steering and cornering, substantial mechanical forces are transferred through the suspension arms, bushes, joints and mounting points. Potholes, speed breakers, rough roads and repeated road impacts can place additional stress on these components. A serviceable upper control arm allows the suspension to move as required while restricting excessive wheel movement that could affect steering response, suspension geometry and vehicle stability. Rubber bushes provide controlled flexibility and help isolate vibration, while joints allow the required suspension movement between connected components. With increasing mileage and repeated road use, bushes can crack, harden, soften, deform or separate, while joints can gradually develop excessive movement. Drivers may then notice knocking or clunking noises from the front suspension, vibration through the steering wheel, vague steering response, reduced stability during braking or cornering and uneven tyre wear. Replacing professionally diagnosed worn suspension components can help reduce unwanted movement and restore more consistent wheel control. Upper control arms work together with lower control arms, steering tie rod ends, shock absorbers, wheel bearings and other suspension bushes, so the surrounding system should also be inspected when diagnosing a problem. Sway bar links, Sway links, Anti roll link rods and Stabiliser sway links can also develop wear and produce knocking or rattling sounds. Before ordering, the X167 chassis, vehicle specification, required suspension positions and OEM references A1673301300 and A1673301400 should be verified. Professional installation followed by a wheel alignment check is recommended to help maintain correct suspension geometry, steering accuracy and balanced tyre wear.

This Front Upper Arms Set of 2 is intended for the supplied Mercedes-Benz GLS X167 application covering 2019 – 2026 and corresponds with OEM reference numbers A1673301300 and A1673301400. Customers searching for Mercedes-Benz GLS X167 Front Upper Arms, Mercedes GLS upper control arms, X167 upper wishbone arms or Mercedes GLS suspension parts should verify compatibility using the chassis code, vehicle production information and OEM references before ordering. Suspension components should not be selected only according to photographs because different control arms can appear very similar while having important differences in dimensions, mounting points, bush configuration, joint orientation or intended suspension position. Vehicle specification can also influence the correct suspension component, which makes accurate identification particularly important when ordering replacement parts. OEM A1673301300 and A1673301400 should therefore be checked against the required components using suitable VIN/chassis-based parts information. This two-piece set is intended to provide corresponding front upper suspension components for the stated X167 application. During everyday driving, the arms experience continuous mechanical loading as the vehicle accelerates, brakes, corners and travels over changing road surfaces. Potholes, speed breakers and rough roads can place additional impact loads on bushes, joints and mounting points. Over time, these components can deteriorate and develop excessive movement. Possible symptoms include knocking or clunking noises, steering vibration, vague handling, reduced stability or irregular tyre wear. However, these symptoms can originate from several steering and suspension components, so professional diagnosis is important. Lower control arms, steering tie rod ends, wheel bearings, shock absorbers and surrounding suspension bushes should also be inspected. Sway bar links, Sway links, Anti roll link rods and Stabiliser sway links should likewise be checked when knocking or rattling noises are present. If professional inspection confirms worn upper suspension components and OEM A1673301300 and A1673301400 correspond with the specific GLS X167, this set provides the stated replacement application. Professional fitting followed by a wheel alignment check is recommended after installation.

The Mercedes-Benz GLS X167 Front Upper Arms Set of 2 corresponds with OEM reference numbers A1673301300 and A1673301400 for the supplied 2019 – 2026 application. These OEM references are important when identifying replacement upper control arms, upper wishbone arms or front suspension components because suspension arms that look similar can have differences in dimensions, mounting arrangement, bush configuration, joint orientation or required installation position. Customers, workshops and technicians should therefore retain both OEM references when checking compatibility rather than selecting components only according to a photograph or general description such as Mercedes GLS upper control arm. The X167 chassis code, vehicle production details and existing component references should also be considered before purchase. This set contains two corresponding suspension arms intended for the front upper suspension arrangement. During everyday driving, the components help guide front wheel movement while the suspension responds to acceleration, braking, cornering, potholes, speed breakers and changing road conditions. Bushes and joints allow the required suspension movement while limiting excessive displacement. As mileage increases, rubber bushes can deteriorate through repeated mechanical loading and road impacts, while joints can gradually develop unwanted movement. Drivers may then experience knocking or clunking sounds, steering vibration, less precise handling, reduced stability or abnormal tyre wear. However, the OEM references identify the required components and should not be treated as a diagnosis of a suspension problem. Lower control arms, steering tie rod ends, shock absorbers, wheel bearings and other suspension bushes can produce similar symptoms. Worn Sway bar links, Sway links, Anti roll link rods and Stabiliser sway links can also cause front suspension knocking or rattling. A professional steering and suspension inspection should therefore determine which components actually require replacement. Once A1673301300 and A1673301400 are confirmed for the required Mercedes-Benz GLS X167 application, professional installation is recommended. A wheel alignment check should follow suspension work to help maintain controlled steering response, correct suspension geometry and balanced tyre wear.

Common symptoms of worn Mercedes-Benz GLS X167 Front Upper Arms can include knocking or clunking noises from the front suspension, vibration through the steering wheel or vehicle body, vague steering response, reduced stability during braking or cornering and uneven or premature tyre wear. Upper control arms experience repeated mechanical loading throughout normal vehicle operation because they help guide the wheel assembly as the suspension moves. Acceleration, braking, steering and cornering continually place forces through the suspension, while potholes, speed breakers and rough road surfaces can introduce additional impact loads. Rubber suspension bushes provide controlled flexibility and help restrict excessive movement. As these bushes deteriorate, they can crack, harden, soften, deform or separate. Suspension joints and mounting areas can also gradually develop additional play. An occasional knock or clunk when travelling over an uneven road may be one indication that part of the front suspension requires inspection. As deterioration progresses, steering can feel less precise and vibration may become noticeable through the steering wheel. The GLS may also feel less settled during braking, lane changes or cornering. Because upper suspension arms contribute to controlled wheel positioning, significant excessive movement can make suspension behaviour less consistent and may contribute to abnormal tyre wear. However, these symptoms should not automatically be treated as confirmation that OEM A1673301300 or A1673301400 requires replacement. Similar symptoms can originate from lower control arms, steering tie rod ends, shock absorbers, wheel bearings and other suspension bushes. Worn Sway bar links, Sway links, Anti roll link rods and Stabiliser sway links can also produce knocking or rattling noises, particularly over uneven road surfaces. Tyre damage, incorrect tyre pressure, wheel imbalance and incorrect alignment can additionally contribute to steering vibration or uneven tyre wear. A complete professional inspection of the steering and suspension system is therefore recommended before replacement parts are purchased. If the upper arms are confirmed as worn and the supplied OEM references correspond with the required X167 application, replacement can help reduce unwanted suspension movement. Professional fitting followed by wheel alignment is recommended.

Replacing Mercedes-Benz GLS X167 Front Upper Arms as a complete set of 2 can provide a balanced suspension repair when professional inspection confirms deterioration in the corresponding upper control arm assemblies. This set corresponds with OEM references A1673301300 and A1673301400 for the supplied Mercedes-Benz GLS X167 2019 – 2026 application. Suspension components on both sides of the front axle experience repeated mechanical loads from vehicle weight, acceleration, braking, cornering, steering and road impacts. Although the components on opposite sides do not necessarily wear at exactly the same rate, a vehicle exposed to repeated road impacts or substantial mileage can develop deterioration in more than one suspension bush or joint. When both corresponding upper arms are professionally confirmed as worn, replacing the pair during the same suspension repair can help restore more consistent suspension behaviour across the front axle. Serviceable upper control arms help guide wheel movement while limiting unwanted displacement. When bushes or joints develop excessive wear, additional movement can contribute to knocking noises, steering vibration, vague handling, reduced stability and irregular tyre wear. Replacing confirmed worn components can help reduce this unwanted movement and restore more controlled suspension operation. However, suspension components should not be replaced unnecessarily simply because they are supplied as a pair. A qualified technician should inspect the actual condition of the arms and surrounding suspension components. Lower control arms, steering tie rod ends, shock absorbers, wheel bearings and other suspension bushes should be checked during the same repair. Sway bar links, Sway links, Anti roll link rods and Stabiliser sway links should also be inspected when knocking, rattling or unstable handling is present. Before ordering, the Mercedes GLS X167 chassis, required suspension positions and OEM references A1673301300 and A1673301400 should be verified against the specific vehicle. Professional installation followed by a wheel alignment check is recommended to help maintain suspension geometry, straight-line stability, predictable steering response and balanced tyre wear.

Replacing worn Mercedes-Benz GLS X167 Front Upper Arms can help restore controlled steering, consistent suspension movement and predictable road behaviour when deterioration in the existing upper control arms, bushes or joints has been professionally identified as the source of the problem. The front suspension must allow the wheels to respond to changing road surfaces while maintaining controlled positioning relative to the vehicle chassis. Upper control arms and upper wishbone assemblies contribute to this process by guiding the wheel assembly through its intended range of movement. When the bushes, joints and mounting areas remain serviceable, the suspension can move as required while excessive displacement is restricted. Once significant wear develops, however, the wheel assembly can move more than intended during acceleration, braking, cornering or travel over uneven roads. Drivers may then notice knocking or clunking noises, steering-wheel vibration, vague steering response, reduced road stability or irregular tyre wear. Replacing professionally diagnosed worn components can help reduce this unwanted movement and restore more consistent suspension behaviour. This set of 2 corresponds with OEM references A1673301300 and A1673301400 for the supplied Mercedes-Benz GLS X167 2019 – 2026 application. Correct compatibility should be established before ordering because suspension components must correspond with the actual vehicle specification and required installation positions. Replacement upper arms cannot correct unrelated faults elsewhere in the steering or suspension system, so lower control arms, steering tie rod ends, shock absorbers, wheel bearings and surrounding suspension bushes should also be inspected. Sway bar links, Sway links, Anti roll link rods and Stabiliser sway links should likewise be checked when investigating front suspension knocking or rattling. Tyre condition, tyre pressure, wheel balance and wheel alignment should also be considered when vibration or abnormal tyre wear is present. After the correct components are professionally installed, a wheel alignment check is recommended because suspension locating components can influence wheel geometry. Correct alignment helps support straight-line stability, steering accuracy, balanced tyre contact and consistent tyre wear. When correctly diagnosed, properly matched and professionally installed, replacement upper arms can help restore controlled front suspension operation and more predictable everyday driving behaviour in the Mercedes-Benz GLS X167.

Mercedes-Benz GLS X167 Front Upper Arms are important suspension components because they help guide the front wheels through their intended movement while supporting correct suspension geometry, controlled steering and predictable road behaviour. This set of 2 corresponds with OEM references A1673301300 and A1673301400 for the supplied Mercedes-Benz GLS X167 2019 – 2026 application. The pair provides the corresponding front upper suspension arms, with A1673301300 associated with the left side and A1673301400 with the right side. During everyday driving, these upper control arms experience repeated mechanical forces from acceleration, braking, cornering, steering input and vehicle weight transfer. Driving over potholes, speed breakers, broken roads and uneven surfaces places additional stress on the bushes, joints and mounting areas. A serviceable control arm allows the suspension to move through its required range while restricting excessive wheel movement that could negatively affect steering response and road stability. As bushes and joints wear, the suspension can gradually develop additional movement. Drivers may notice knocking or clunking sounds from the front axle, steering-wheel vibration, vague steering, reduced stability during braking or cornering, or abnormal tyre wear. Correctly matched replacement components can help reduce unwanted movement when the existing arms have been professionally diagnosed as worn. The GLS X167 suspension should nevertheless be inspected as a complete system because upper control arms are only one part of the front axle arrangement. Lower control arms, steering tie rod ends, suspension bushes, shock absorbers and wheel bearings should also be checked. Sway bar links, Sway links, Anti roll link rods and Stabiliser sway links can produce similar knocking or rattling sounds when worn. Correct component identification is particularly important because visually similar suspension arms can have different mounting dimensions or applications. Before ordering, OEM references A1673301300 and A1673301400 should therefore be checked against the specific X167 chassis and vehicle specification. Professional installation is recommended, followed by a wheel alignment check to help maintain correct geometry, steering accuracy and balanced tyre wear.

Yes, a professional wheel alignment check is recommended after replacing Mercedes-Benz GLS X167 Front Upper Arms because upper control arms form part of the suspension arrangement that locates the front wheel assembly and influences suspension geometry. This set corresponds with OEM A1673301300 for the front upper left position and A1673301400 for the front upper right position. When an original arm develops worn bushes, excessive joint movement or physical damage, the wheel assembly may move more than intended under braking, acceleration and cornering loads. This can make wheel positioning less consistent and may contribute to vague steering, an unsettled feeling on the road or abnormal tyre wear. Once the worn components have been replaced, an alignment check helps determine whether the relevant wheel geometry is within the appropriate specification. Incorrect alignment can contribute to an off-centre steering wheel, vehicle pulling, inconsistent steering response and premature wear on the inner or outer areas of the tyres. Alignment should ideally be performed after the technician confirms that the surrounding steering and suspension components are in serviceable condition. Lower control arms, tie rod ends, suspension bushes, wheel bearings and shock absorbers should be checked because excessive movement elsewhere can affect steering behaviour and alignment results. Sway bar links, Sway links, Anti roll link rods and Stabiliser sway links should also be inspected if knocking or rattling remains after the repair. Tyre condition, tyre pressure and wheel balance should be checked when vibration or uneven tyre wear was part of the original complaint. The correct installation of suspension arms is equally important because bushes and mounting points must be handled according to the appropriate repair procedure. Before installation, the X167 chassis and OEM references A1673301300 and A1673301400 should be verified for the specific vehicle. After the replacement is completed, professional alignment can help support straight-line stability, predictable steering response, consistent tyre contact and balanced tyre wear.

Yes, worn Mercedes-Benz GLS X167 Front Upper Arms can contribute to knocking or clunking sounds, steering vibration, vague handling, reduced road stability and abnormal tyre wear when deterioration develops in their bushes, joints or mounting areas. Upper suspension arms operate continuously whenever the vehicle is moving and experience repeated forces from braking, acceleration, cornering, steering and road impacts. The GLS is a substantial vehicle, so maintaining controlled movement throughout the suspension system is important for predictable wheel behaviour. Potholes, speed breakers and uneven roads repeatedly load the suspension bushes and joints. Over time, rubber components can crack, deform, harden, soften or separate, while joints can develop unwanted play. An occasional knock when travelling across an uneven surface may be an early indication that the suspension requires inspection. As wear progresses, additional movement can make steering feel less precise, and vibration may become noticeable through the steering wheel or chassis. The vehicle may also feel less settled during braking, cornering or lane changes. Excessive movement in suspension locating components can contribute to inconsistent wheel positioning and may eventually affect tyre wear. However, these symptoms should not automatically be treated as proof that A1673301300 or A1673301400 requires replacement. Lower control arms, tie rod ends, shock absorbers, wheel bearings and other suspension bushes can create similar symptoms. Sway bar links, Sway links, Anti roll link rods and Stabiliser sway links are particularly important to inspect when knocking or rattling is present over smaller road irregularities. Incorrect tyre pressure, damaged tyres, wheel imbalance or incorrect alignment can also contribute to vibration and uneven tyre wear. A professional suspension inspection should therefore determine the actual source before components are replaced. If the upper arms are confirmed as worn and the OEM references match the required X167 application, replacing the pair can help restore more controlled wheel movement. Professional installation and a subsequent wheel alignment check are recommended.

Worn Mercedes-Benz GLS X167 Front Upper Arms should be replaced when professional inspection confirms excessive joint movement, deteriorated bushes, physical damage or another fault that prevents the suspension components from controlling wheel movement as intended. The upper control arms experience continuous loading because acceleration, braking, cornering and road impacts repeatedly transfer forces between the wheel assembly and chassis. Rubber bushes provide controlled flexibility and help isolate unwanted vibration, while the joints permit the movement required for normal suspension operation. As mileage increases, these components can gradually deteriorate. Early wear may appear as an occasional knocking or clunking sound over rough roads, while more advanced deterioration can contribute to steering vibration, loose handling, reduced stability and abnormal tyre wear. Significant excessive movement should therefore be addressed after proper diagnosis rather than ignored. At the same time, suspension parts should not be replaced merely because a particular noise is present. Lower control arms, steering tie rod ends, wheel bearings, shock absorbers and surrounding suspension bushes can produce similar symptoms. Sway bar links, Sway links, Anti roll link rods and Stabiliser sway links can also create knocking or rattling noises. A complete inspection helps determine whether the upper arms actually require replacement and whether other components need attention at the same time. For this pair, independent catalog information identifies A1673301300 as the front upper left arm and A1673301400 as the front upper right arm for the X167 application. The specific vehicle specification should still be checked before purchase, particularly because catalog notes can vary by variant. Once the correct components are selected, professional installation is recommended so the arms, bushes and mounting hardware are handled according to the appropriate repair procedure. A wheel alignment check after replacement can then help maintain correct suspension geometry, straight-line stability, predictable steering and balanced tyre wear.