Product Specification

High-selling Upper Right Rear Control Arm 4M0 505 398 R for German Porsche Cayenne E3

This fast-moving rear upper right suspension control arm with OE number 4M0 505 398 R is a core heavy-duty chassis component built on the shared MLB Evo platform, perfectly matching German-assembled Porsche Cayenne 9YA/9YB (2017–current). It is widely stocked by luxury SUV repair shops and cross-border auto parts wholesalers with sustained high aftermarket demand.

Core Selling Points

Hot-selling chassis wearable part with stable repeat bulk orders

Rear upper control arms are high-frequency replacement items for full-size luxury SUV chassis maintenance. Original factory arms develop cracked rubber bushings, loose clearance and deformation after long-term heavy-load, high-speed and bumpy road driving. Defective arms trigger rear suspension clunking, vehicle drift and severe uneven tire wear. Professional luxury service garages and global spare parts distributors place recurring bulk orders all year round, bringing stable sales volume and attractive profit margins for dealers.

100% OE standard exact fit, direct bolt-on installation

Manufactured strictly following Porsche and VAG original mold, overall length, mounting hole spacing, flange position and integrated bushing dimensions. Forged lightweight aluminum arm body and dual integrated rubber-metal composite bushings fully match genuine OEM specifications. No cutting, reaming or modification required during replacement; precisely connects rear subframe and wheel knuckle, greatly cutting installation and four-wheel alignment labor hours.

Full compatible vehicle lineup

• Porsche: Cayenne E3 9YA/9YB (2017–present, Base/S/Turbo/E-Hybrid/Coupe)
• Audi: Q7 4M, Q8, SQ7, RSQ8
• Volkswagen: New Touareg CR7
• Bentley: Bentayga

Reinforced high-load anti-aging structure

1. Integral forged aviation-grade aluminum alloy arm body, lightweight yet ultra-high torsion and bending resistance, no deformation under off-road and full-load driving
2. Thickened dual-layer natural rubber metal bushings with anti-oxidation coating, resistant to road salt, engine oil and long-term high-temperature aging
3. Precision press-fit between bushing and arm body, effectively avoid separation and loose clearance under long driving vibration
4. Stress relief machining eliminates internal processing stress, prolong service life far beyond ordinary aftermarket arms

Restore factory suspension geometry & driving stability

Accurately locks rear wheel camber and toe parameters, suppress excessive wheel swing during cornering and emergency braking. Eliminates vague rear-end handling, excessive body roll and high-speed jitter, restores original vehicle comfort, precise control and uniform tire wear for heavy luxury SUVs.

Fully resolve common faulty control arm symptoms

Perfectly fixes typical chassis faults:

• Thudding/clunking noise from rear suspension over speed bumps and rough roads
• Vehicle pulling to one side during driving, frequent alignment failure
• Severe inner/outer shoulder wear on rear tires
• Loose rear end and unstable high-speed cruising
• Cracked, oil-leaking and detached original rubber bushings

Rigorous multi-stage factory testing & sufficient spot stock

Every control arm undergoes torsion tensile test, salt spray aging test, dimensional calibration and road vibration simulation test before delivery, compliant with TS16949 international automotive quality standards. Mass ready stock supports mixed one-stop bulk orders with left rear upper control arm, lower arms, stabilizer links and brake parts. Custom neutral packaging and private label OEM services are available to meet cross-border wholesale procurement demands.