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Views: 0 Author: Site Editor Publish Time: 01-16-2026 Origin: Site
Truck Suspension Control Arm Bushing | Rear Axle | Triangular Control Arm (CV) | Steel Elastomer | With Retaining Ring
Rear-axle control/trailing arm bushings are mission-critical rubber-metal components in heavy-duty truck suspension. They stabilize axle geometry under high loads, isolate vibration and impact, and help control NVH. This article focuses on Truck Suspension Control Arm Bushing OEM 0003502805, commonly searched and supplied for Mercedes-Benz Trucks, Scania, and MAN, with cross references 0003500506 / 0003300075 / 1515981. You will find complete dimensions, failure symptoms, and installation best practices—built for B2B buyers (distributors, workshops, fleets) and SEO performance.
On heavy trucks, the rear axle sees continuous longitudinal, lateral, and torsional loads (traction, braking torque, uneven roads). A control/trailing arm bushing provides an engineered elastic connection that:
Maintains the axle’s position relative to the chassis
Limits unwanted movement and “rear-end steer”
Supports stable handling and predictable tracking
In real-world duty cycles—overloading, potholes, curb hits, and harsh braking—the bushing must dissipate energy safely. A high-quality steel elastomer suspension bushing:
Converts impact energy into internal damping within the elastomer
Reduces shock transfer to brackets, arms, and the cab
Protects the trailing/control arm joints from fatigue
NVH performance depends on rubber compound, bushing stiffness curve (radial/axial/torsion), and bonding quality. Properly designed bushings reduce:
Low-frequency droning and vibration in the rear axle area
Clunking noises caused by joint play
Harshness when crossing rough surfaces
For Triangular Control Arm (CV) designs, the bushing is central to axle location. Once it degrades, symptoms often cascade:
Axle geometry drift → abnormal tire wear
Increased rear axle “tail sway” under braking/acceleration
Higher loads on arms, brackets, and fasteners → fatigue risk
You may see the part written as:
0003502805
000 350 28 05
For search coverage and quotation accuracy, include keywords like “0003502805 bushing” and “Mercedes truck rear axle bushing.”
This bushing is widely cross-referenced as compatible/interchangeable with:
0003500506
0003300075
1515981
In practice, interchangeability should be confirmed by dimensions + fitting position + control arm type + retaining ring feature.
Mercedes, Scania, and MAN share similar engineering requirements in rear axle suspension joints:
High load capacity and long fatigue life
Controlled compliance for stability and comfort
Corrosion resistance for harsh environments
This is why Scania MAN control arm bushing and Mercedes rear axle bushing searches often overlap in the aftermarket.
Fitting Position: Rear Axle
Control / Trailing Arm Type: Triangular Control Arm (CV)
Common naming: Rear Axle Triangular Control Arm Bushing / Trailing Arm Bushing
OEM 0003502805 is a Steel Elastomer rubber-metal bushing consisting of:
Outer steel shell: press-fit into the arm or housing, carries outer loads
Inner steel sleeve (inner shell): interfaces with bolt/pin clamping forces
Elastomer layer: provides compliance, damping, and fatigue resistance
In heavy truck service, the bushing sees:
Radial loads (road impacts, payload changes)
Axial and torsional deflection (braking/traction torque, arm rotation)
The elastomer works mainly in shear + compression, dissipating energy and preventing metal-to-metal contact. Steel sleeves maintain assembly precision and load transfer integrity.
Rear axle environments expose bushings to water, salt spray, temperature swings, and oil contamination. The rubber compound should provide:
Fatigue resistance for long-term cyclic loading
High shear and tear strength to avoid cracking
Weathering/ozone resistance to prevent surface checks and hardening
A key feature is with retaining ring:
Helps axial positioning and prevents migration under vibration
Improves installation security and repeatability
Provides a clear mechanical confirmation that the bushing is seated correctly
Bonding between rubber and steel is a common failure boundary. Strong, consistent vulcanization bonding helps prevent:
Early debonding and internal slip
Noise issues caused by micro-movement
Premature cracking from stress concentration
Controlled surface preparation, primer systems, and curing windows are essential.
These dimensions are crucial for correct fitment across platforms and for avoiding rework. For cross-brand sourcing, verify OD + inner sleeve OD + hole spacing + retaining ring.
| Specification | Value |
|---|---|
| OEM | 0003502805 |
| Replace / Cross Ref | 0003500506 / 0003300075 / 1515981 |
| Fitting Position | Rear Axle |
| Control / Trailing Arm Type | Triangular Control Arm (CV) |
| Material | Steel Elastomer |
| Retaining Ring | With retaining ring |
| Length | 172 mm |
| Outer Diameter | 85 mm |
| Outer Diameter (inner shell) | 63 mm |
| Thickness | 24 mm |
| Width | 58 mm / 76 mm |
| Mounting points diameter | 25 mm |
| Hole spacing | 130 mm |
Why these numbers matter:
OD 85 mm controls press-fit stability and anti-rotation behavior
Inner sleeve OD 63 mm relates to clamping load transfer and slip prevention
Hole spacing 130 mm and mounting points Ø25 mm are key geometry checks for the arm joint
Width 58/76 mm may reflect design variants or spacer/bracket differences—always confirm against the arm design
Typical symptoms:
Clunking/knocking over bumps
Rear “tail wag” feeling during acceleration or braking
Often linked to rubber cracking, debonding, or sleeve offset.
If rear axle geometry drifts, you may see:
One-side shoulder wear
Uneven wear patterns left vs right
Bushings can be a root cause by allowing excessive axle movement.
Common workshop checks show:
Visible movement when prying the arm joint
Delayed rebound or “loose” feel under load changes
This suggests rubber fatigue softening or bond slip.
Frequent failure appearances:
Surface checking/cracks, hard glossy rubber
Rubber-to-metal separation (debonding)
Inner/outer sleeve eccentricity (offset)
A practical 3-step approach:
Visual check: cracks, debonding, offset
Pry test: excessive play or clunk
Road confirmation: braking/acceleration/bumps reproduce noise or sway
If 2+ conditions are present, replacement is usually recommended.
Use proper press tools and alignment sleeves—avoid hammering that deforms steel shells
Follow the correct installation direction per arm design
Prevent rubber damage from sharp edges during assembly
Clean the groove and remove burrs so the ring seats fully
An unseated ring can cause axial movement and recurring noise—double-check after assembly
Validate hole spacing 130 mm before final tightening to avoid pre-stress
Confirm mounting points Ø25 mm matches the bolt/pin to avoid impact wear due to clearance
Torque varies by axle and vehicle configuration. Follow the OEM service manual:
Torque: ___ N·m (per vehicle service manual)
Best practice: final torque at specified ride height / load condition to avoid permanent torsional preload in the elastomer.
Inspect rear axle joints for corrosion and contamination periodically
If the arm bore or bracket is worn/deformed, repair it—otherwise new bushings may fail early
Fleets should build maintenance intervals by mileage + road severity to reduce tire cost and downtime
Hebei Huami New Material Technology Co., Ltd. delivers consistent, verifiable supply for heavy-duty rubber-metal suspension components like 0003502805 bushing:
30 years in rubber-metal parts manufacturing
Deep understanding of heavy-load fatigue, impact, and NVH requirements
IATF16949 quality management mindset for process control and consistency
TÜV certification framework
AEO Advanced Certification supporting compliant and stable international deliveries
Proprietary rubber formulations optimized for fatigue, shear, weathering
Heavy-duty damping tuning to reduce debonding and noise risks
Controlled tooling accuracy and key dimension stability for OD 85 mm / inner shell 63 mm / hole spacing 130 mm
Standardized manufacturing reduces batch variation—ideal for distributors and fleet programs
Quality checks can cover:
Hardness / tensile / tear / compression set / bonding strength
Durability tests: fatigue life, salt spray, weathering, oil resistance (per project requirements)
OEM/ODM, drawing or sample-based development
Small-batch customization with stable lead times and scalable supply
A: It is typically a rear axle control/trailing arm bushing for Triangular Control Arm (CV) suspension layouts on heavy-duty trucks.
A: Common cross references include 0003500506, 0003300075, and 1515981. Confirm by dimensions, position, and the retaining ring feature.
A: It is commonly supplied and searched for these brands in the aftermarket. Final fitment depends on matching Rear Axle position, Triangular Control Arm (CV) type, and key dimensions.
A: Length 172 mm; OD 85 mm; inner shell OD 63 mm; thickness 24 mm; width 58/76 mm; mounting points Ø25 mm; hole spacing 130 mm.
A: The retaining ring improves axial positioning and reduces the chance of bushing migration, helping prevent noise and repeat failures.
A: Rear axle clunking, rear-end sway, abnormal tire wear, increased joint play, rubber cracking, debonding, and sleeve offset.
A: Wrong press tools (shell deformation), retaining ring not seated, and skipping alignment checks (especially hole spacing 130 mm) which can preload the rubber.
A: It varies by truck model and axle. Use the OEM manual: Torque: ___ N·m and apply final torque at specified ride height.
A: Prevent corrosion/contamination, repair worn bores/brackets, and set maintenance intervals based on mileage and road severity.
A: Yes—Hebei Huami supports OEM/ODM, drawing/sample development, small-batch production, and stable lead times for global customers.
