Anhui Lianjun Rubber Technology Co., LTD. is a China-based manufacturer focused on NVH rubber damper elements for Mercedes-Benz and BMW chassis systems. Our BMW Strut Mount Replacement Parts range covers front and rear upper strut mounts, shock absorber top mounts, and integrated bearing assemblies for E28, E34, E46, E60, E90, X5, X6, Z4 and other BMW platforms. We manufacture from our 13,000 m² facility in Ningguo, Anhui, with nearly 1,000 specifications across the complete suspension rubber portfolio.
BMW Strut Mount Range and Vehicle Coverage
Our BMW strut mount program is built around OE-matched replacement parts. Each mount is identified by the original BMW part number and configured for the specific chassis, axle position, and bearing requirement. The table below lists representative models from our current catalog.
| Model Code |
OE Numbers |
Application |
| LJ-047 |
33521132270, 33521132078 |
Rear suspension strut support mount for BMW 5 Series E34 |
| LJ-124 |
31331139452, 00343133908, 31331124508 |
BMW 5 E28/E34 suspension strut support bearing |
| LJ-127 |
33521092362, 33521137972, 33504035929, 33521128819 |
Suspension strut mount for BMW 3 Series E46 |
| LJ-375 |
31336752735, 31336769582, 31336770568, 31331094616, 31336760943 |
Front strut mount with bearing for BMW 3 Series E46/E90 |
| LJ-407 |
33521091238 |
Front strut mount for BMW 7 Series E38 / 5 Series E39 shock absorber top mount |
| LJ-462 |
33526753810, 33526779611, 33526769744 |
Rear top strut mounting for BMW 5 Series E60 |
| LJ-480 |
31336788776, 31336774738, 31336776391, 31336857001 |
Upper shock absorber mount strut top hat for BMW X5 E70 / X6 E71 |
| LJ-1140 |
31306884485 |
BMW shock absorber top mount aluminum housing bearing seat |
The full catalog also includes Strut Mount variants for Mercedes-Benz platforms, and we maintain parallel programs for BMW Suspension Bushing and BMW Engine Mount components.
Material and Engineering Design
BMW strut mounts operate at the interface between the shock absorber piston rod, the vehicle body, and the steering axis. We select rubber compounds and metal housing materials to match the original damping characteristics and service temperature range. Typical configurations include:
- Natural rubber or high-damping synthetic rubber bonded to steel or aluminum housings
- Integrated ball bearing or plain bearing for front axle steering rotation
- Reinforced rubber-to-metal bonding with controlled axial and radial stiffness
- Corrosion-resistant surface treatment on exposed metal parts
Our R&D center works from original part geometry and material reference data to reproduce the required NVH signature. For custom programs, we can adjust rubber hardness, insert geometry, and bearing preload to match a specific vehicle variant or aftermarket performance target.
Configuration and Customization
Most BMW strut mount orders are configured directly from the OE number and vehicle application. We also support custom mold development for private-label programs, modified damping rates, or non-standard housing materials. The configuration process covers:
- Axle position: front or rear
- Bearing type: integrated ball bearing, plain bearing, or no bearing
- Housing material: stamped steel, cast aluminum, or hybrid
- Rubber hardness and damping curve
- Surface finish and anti-corrosion coating
We provide free samples for evaluation before mass production. Our team confirms dimensional fit, bearing torque, and rubber-to-metal bond strength on each sample batch.
Quality Control and Acceptance
Anhui Lianjun Rubber Technology operates under ISO 9001 and IATF 16949 quality management systems. Incoming raw rubber, metal stampings, and bearings are inspected before production. Finished strut mounts undergo:
- Dimensional verification against OE reference data
- Rubber hardness and rebound testing
- Bond strength pull test on rubber-to-metal interfaces
- Bearing rotation torque and axial clearance check
- Visual inspection for surface defects and coating uniformity
We support third-party inspection and provide batch test reports with each shipment. Free samples are available so you can validate fit and performance before committing to a production order.
Installation and Maintenance Considerations
BMW strut mounts are wear items that should be replaced in pairs on the same axle. Correct installation requires proper torque on the top nut and alignment of the bearing orientation. Our mounts are supplied with the same mounting hole pattern and stud positions as the original part, so no modification is needed for standard replacement. For front mounts with integrated bearings, we recommend checking bearing smoothness before installation and replacing the mount if any notchiness is felt.
We include installation notes and torque specifications with bulk orders. For distributors and workshops, we can provide technical bulletins covering common failure symptoms such as knocking over bumps, uneven tire wear, and steering wander.
Information We Use to Configure Your Solution
To prepare an accurate quotation and production plan, we need the following project details:
- BMW model, year, and chassis code (e.g., E46, E90, F25)
- OE part number or reference sample
- Axle position and bearing requirement
- Expected annual volume and first order quantity
- Packaging and labeling requirements
- Any private-label or custom branding needs
With this information, our engineering team confirms the correct tooling, material specification, and production lead time. We respond to RFQs with a complete technical proposal and sample plan.
Frequently Asked Questions
Do you manufacture BMW strut mounts with integrated bearings?
Yes. We produce front strut mounts with integrated ball bearings for models such as the E46, E90, and X5. The bearing is pressed into the rubber-metal assembly and tested for smooth rotation and axial clearance before shipment.
Can you match a specific OE number that is not in your catalog?
We maintain a database of nearly 1,000 specifications and can develop new tooling for unlisted OE numbers. Provide the BMW part number or a sample, and our R&D team will evaluate the geometry and material requirements.
What is the minimum order quantity for custom BMW strut mounts?
We offer low MOQ for initial trial orders and free samples for evaluation. For custom mold development, the MOQ depends on the tooling investment and production process. Contact our sales team with your target volume for a specific quotation.
Do you provide packaging with private labeling?
Yes. We support neutral packaging, customer-branded boxes, and barcode labeling. Packaging specifications are confirmed during the quotation stage and can include individual boxes, master cartons, and palletization.
How do you ensure the rubber compound matches the original NVH performance?
We select rubber formulations based on the original part's hardness, damping characteristics, and service temperature range. Each batch is tested for hardness, tensile strength, and rebound. For critical programs, we can provide dynamic stiffness curves.
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