BMW Suspension Parts for BMW 3 Series E46 (1999-2005)

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Your BMW's handling is determined by the capabilities and age of your suspension components. Our selected aftermarket performance suspension like coilovers, lowering springs, cup kits, and dampers can improve the handling of your BMW dramatically. With those upgrades comes the needs for proper adjustment; our recommended supporting modifications comes stiffer sway bars, bushings, and adjustable camber/caster plates, to name a few found on this page. Completely build your suspension for the most competitive BMW driving experience, achieve your perfect look, or simply replace your worn suspension with our recommended parts.

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Adjustable Front Sway Bar End Links - 215-275mm
Please measure before purchasing. For lowered or custom applications. Will not fit fact...
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ECS - Corporate Logo
T#:39025508
Part#: 053153LA01
In Stock
Sale - Save 20% $ 183.99

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$ 147.19 USD
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$ 183.99

This product was last offered at the strikethrough price on
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$ 147.19 USD
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Upgrade your BMW's suspension with ECS Tuning Adjustable Sway Bar End Links, designed to provide up to 60mm (2.36") of adjustability. These end links allow you to eliminate sway bar preload or fine-tune it for specific racing needs and corner balancing. When installed, they improve drivetrain clearance and enhance sway bar responsiveness by reducing deflection, ensuring superior handling. Perfect for lowered vehicles using springs, coilovers, or air-ride suspension systems, these adjustable sway bar end links allow you to remove unwanted preload caused by changes in the center-to-center distance between sway bar mounting points. By adjusting the end links to a neutral position, you eliminate sway bar preload, enhancing suspension performance in various driving conditions.

The main body of the ECS Sway Bar End Links is crafted from strong, lightweight 6061-T6 billet aluminum and anodized red for superior corrosion resistance. Featuring left and right-hand threaded center sections and machined hex wrench fittings, these end links allow for quick and easy on-the-car adjustments. Zinc-plated hardware ensures secure and lasting adjustments, while the heavy-duty ball joint ends come with weather-resistant rubber boots and stainless steel wire retainers, providing superior protection against salt, rain, and ozone for extended durability. Each kit also includes zinc-plated Nyloc nuts and hardened steel washers for secure installation and improved contact surface on the sway bar.

These end links are designed, engineered, and rigorously tested by ECS Tuning to ensure the highest quality. Whether you have a lowered or stock suspension, these adjustable sway bar end links are the perfect upgrade, offering a high-quality, heavy-duty replacement that fits your specific needs.

Features:

Range of Adjustment: 215mm (8.46") to 275mm (10.82") 6061-T6 Billet Aluminum Construction: Red anodized for superior corrosion resistance Zinc-Plated Hardware: Provides durability and superior corrosion protection Right and Left-Hand Threaded Center Sections: Quick and simple on-the-car adjustments Heavy-Duty Ball Joints(M10x1.5): Weather-resistant rubber boots and stainless steel wire retainers for long-lasting durability

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4mm Heavy Duty Rear Shock Mount Reinforcement Plate Set
For coupe models only
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ECS - Corporate Logo
T#:376177
Part#: 002478ECS01KT
In Stock
Sale - Save 25% $ 85.99

This product was last offered at the strikethrough price on
06-13-2026

$ 64.48 USD
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Sale - Save 25%
$ 85.99

This product was last offered at the strikethrough price on
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$ 64.48 USD
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A very common weak point on the 3 series BMW is the sheetmetal of the rear shock tower. The sheetmetal here is relatively thin and very susceptible to stress and fatigue. A worn out shock will bottom-out more often and this energy is transferred through the bump stop and into the metal chassis. Stiffer shocks and shock mounts also put more stress on the sheetmetal. Factor in age, mileage, and environmental conditions and it's not a surprise that we see shock tower failures often. BMW addressed this issue with reinforcements of their own but our's are thicker for additional strength. This kit mounts on top of the shock tower and can either be bolted or welded in place. Because of the shape of the rear shock tower, these do not fit cabrio/convertible cars. 
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ECS - Corporate Logo
T#:363117
Part#: 002447ECS03
In Stock
Sale - Save 25% $ 88.99

This product was last offered at the strikethrough price on
06-13-2026

$ 66.74 USD
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$ 88.99

This product was last offered at the strikethrough price on
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$ 66.74 USD
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BMW E46 Z4 Rear Polyurethane Differential Bushing Performance is the ultimate upgrade for enhancing the connection between your BMW's chassis and differential. Designed by Turner Motorsport, this performance bushing replaces the soft factory rubber with durable polyurethane, offering superior control and response. By minimizing vibrations and reducing deflection, this bushing ensures a more direct and responsive driving experience, making it a must-have for any performance-oriented BMW E46 or Z4 owner.

  • Enhanced Performance: Replaces the soft factory rubber with durable polyurethane for improved driveline response.
  • Reduced Vibrations: Minimizes vibrations between the chassis and differential, providing a more connected driving experience.
  • Increased Durability: Made from high-quality polyurethane, offering long-lasting performance under demanding conditions.
  • Improved Control: Reduces deflection, ensuring a more precise and responsive handling experience.
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ECS Coilover Damping Extensions - 220MM
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ECS - Corporate Logo
T#:42369339
Part#: 004673LA01
In Stock
Sale - Save 10% $ 37.99

This product was last offered at the strikethrough price on
06-14-2026

$ 34.19 USD
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Sale - Save 10%
$ 37.99

This product was last offered at the strikethrough price on
06-14-2026

$ 34.19 USD
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Fine-tuning your coilover damping shouldn’t mean stripping out your rear seats or interior panels. On many applications, rear shock adjusters are hidden behind carpet, trim, or seatbacks, making quick adjustments a hassle.

The ECS Rear Damping Extension Kit solves that problem with a clean and functional solution. These flexible extensions relocate the adjustment knobs to an easily accessible point above the rear shock towers, letting you dial in your suspension from inside the cabin, no disassembly required.

Installation is straightforward: simply drill a small access hole in your interior trim and route the extension cables through. The adjustment knobs can be removed to allow the line to pass through smaller openings, minimizing cutting. For proper installation, be sure to fully loosen the set screw, insert the cable, then securely tighten it using the provided Allen key.

Kit Includes:

(2) Rear damping adjuster extension cables

Installation hardware and Allen key

A smart upgrade for track cars, daily drivers, or anyone who values easy access to suspension tuning, without compromising interior fit and finish.

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Rear Bumpstop - Priced Each
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Rein - Corporate Logo
T#:31589440
Part#: 33502290348
Ships in 3 Business Days
$ 25.99 USD
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Mubea - Corporate Logo
T#:13200577
Part#: 31336769915
Ships on Nov 3, 2026
$ 57.99 USD
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Replace your cracked or failing spring with this aftermarket replacement!

Rein Front Sway Bar End Link - E46, Z4
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Rein - Corporate Logo
T#:379802
Part#: 31356780847
Ships in 3 Business Days
$ 25.99 USD
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Includes hardware
Front Strut Mount - Priced Each
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Rein - Corporate Logo
T#:379746
Part#: 31336760943
Ships in 3 Business Days
$ 63.99 USD
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$ 63.99 USD
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Includes strut pivot bearing and attachment hardware.

ECS Billet Front Sway Bar Brackets With Polyurethane Bushings - Pair ...
For vehicles with Standard Suspension
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ECS - Corporate Logo
T#:13891826
Part#: 016989LA01KT
In Stock
Sale - Save 10% $ 127.99

This product was last offered at the strikethrough price on
06-14-2026

$ 115.19 USD
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Sale - Save 10%
$ 127.99

This product was last offered at the strikethrough price on
06-14-2026

$ 115.19 USD
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The ECS Tuning Billet Front Sway Bar Mounting Kit will provide your vehicle with a more rigid mounting solution from the sway bar to chassis than the OEM steel brackets. With an improved sway bar mounting bracket and the included polyurethane sway bar bushings you can expect to achieve an increase in rear sway bar effectiveness and less body roll as a result.

PART DESIGN

The front sway bar mounting brackets are made from a solid piece of 6061-T6 billet aluminum that are precision CNC-machined to bolt into the OEM mounting location while utilizing greaseable, polyurethane bushings. They are Type II black anodized for corrosion protection and include zinc flake coated Class 12.9 alloy steel bolts for premium performance.

The red polyurethane bushings feature a greaseable channel for extended service life and quieter operation than standard polyurethane bushings.

PERFORMANCE FEATURES

Billet & poly mounts replacing the OEM steel & rubber configuration you can expect faster reaction speed and greater effectiveness from your front sway bar due to less deflection. This translates to better handling with sharper, flatter cornering with reduced body roll.

PRODUCT DEVELOPMENT

ECS Billet Front Sway Bar Mounting Kit was designed, engineered, tested and quality inspected by the Research and Development team in our Wadsworth, Ohio facility to ensure the highest level of precision and quality is delivered throughout rigorous long term product testing and leading edge product development methods.

INSTALLATION AND SUPPORT

Installation is simple. Simply unbolt your front sway bar mounting brackets and slip over our poly bushings and billet mounting brackets with the included hardware. That's it! Enjoy better handling and a crisp front suspension.

SPECIAL NOTE: You can use any conventional automotive bearing grease for service.

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ECS Billet Front Sway Bar Brackets With Polyurethane Bushings - Pair ...
For vehicles with Sport Suspension Or M-Sport Package For vehicles with M-Sport Package
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ECS - Corporate Logo
T#:13891827
Part#: 016989LA02KT
In Stock
Sale - Save 10% $ 126.99

This product was last offered at the strikethrough price on
06-14-2026

$ 114.29 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 126.99

This product was last offered at the strikethrough price on
06-14-2026

$ 114.29 USD
Free Shipping on orders $49 and up

The ECS Tuning Billet Front Sway Bar Mounting Kit will provide your vehicle with a more rigid mounting solution from the sway bar to chassis than the OEM steel brackets. With an improved sway bar mounting bracket and the included polyurethane sway bar bushings you can expect to achieve an increase in rear sway bar effectiveness and less body roll as a result.

PART DESIGN

The front sway bar mounting brackets are made from a solid piece of 6061-T6 billet aluminum that are precision CNC-machined to bolt into the OEM mounting location while utilizing greaseable, polyurethane bushings. They are Type II black anodized for corrosion protection and include zinc flake coated Class 12.9 alloy steel bolts for premium performance.

The red polyurethane bushings feature a greaseable channel for extended service life and quieter operation than standard polyurethane bushings.

PERFORMANCE FEATURES

Billet & poly mounts replacing the OEM steel & rubber configuration you can expect faster reaction speed and greater effectiveness from your front sway bar due to less deflection. This translates to better handling with sharper, flatter cornering with reduced body roll.

PRODUCT DEVELOPMENT

ECS Billet Front Sway Bar Mounting Kit was designed, engineered, tested and quality inspected by the Research and Development team in our Wadsworth, Ohio facility to ensure the highest level of precision and quality is delivered throughout rigorous long term product testing and leading edge product development methods.

INSTALLATION AND SUPPORT

Installation is simple. Simply unbolt your front sway bar mounting brackets and slip over our poly bushings and billet mounting brackets with the included hardware. That's it! Enjoy better handling and a crisp front suspension.

SPECIAL NOTE: You can use any conventional automotive bearing grease for service.

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Rein Rear Lower Control Arm - E36, E46
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Rein - Corporate Logo
T#:592413
Part#: 33326770813
In Stock at Vendor
$ 71.99 USD
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Complete including bushing
Front Control Arm Retainer - Right
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Rein - Corporate Logo
T#:567102
Part#: 31122229624
Back Ordered
$ 58.99 USD
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Includes control arm bushing


Rein Front Control Arm Retainer - Left - E46
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Rein - Corporate Logo
T#:592211
Part#: 31122229623
Back Ordered
$ 58.99 USD
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Includes control arm bushing
Rein Sway Bar Bushing - E46
For coupe models with production date from 09/2001 For vehicles with production date from 09/2001 with sport suspension For coupe models with production date from 04/2001 For vehicles with production date from 04/2001 with sport suspension
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Rein - Corporate Logo
T#:402078
Part#: 33556751269
In Stock
$ 6.99 USD
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$ 6.99 USD
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Fits 23.5mm sway bar only
Rein Front Bump Stop - E46
For sedan models with sport suspension and a production date from 09/2001 For vehicles with sport suspension and a production date from 04/2001 For coupe models with sport suspension and a production date from 09/2001 For coupe models with sport suspension and a production date from 04/2001
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Rein - Corporate Logo
T#:363437
Part#: 31302290313
In Stock
$ 13.99 USD
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$ 13.99 USD
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Bump stops prevent premature damper failure

Rein Rear Bumpstop - E36, E46
For sedan models with standard suspension with production date up to 09/2001 For vehicles with production date up to 03/2002 For coupe models with standard suspension with production date up to 09/2001. For conve... For vehicles with standard suspension with production date up to 04/2001 For vehicles with standard suspension
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Rein - Corporate Logo
T#:592428
Part#: 33502290318
In Stock at Vendor
$ 14.99 USD
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$ 14.99 USD
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Protects damper from premature failure

Rein Sway Bar Bushing - 24 mm - Z4 E46
For vehicles with sport suspension and production date up to 04/2001 For vehicles with sport suspension only For vehicles with sport suspension and production date up to 09/1999 For touring models with sport suspension. Also for sedan models with sport suspension a... For convertible models with sport suspension. Also for coupe models with standard suspe... For convertible models with sport suspension. Also for coupe models with standard suspe...
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Rein - Corporate Logo
T#:593229
Part#: 31351094556
Ships in 1 Business Day
$ 13.05 USD
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$ 13.05 USD
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Bump Stop - Priced Each
For vehicles without sport suspension and a production date up to 04/2001
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Rein - Corporate Logo
T#:375740
Part#: 31331094750
Ships in 3 Business Days
$ 10.99 USD
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$ 10.99 USD
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Suspension part to keep your new shocks in prime condition

Lower Control Arm Bushing - Pair
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Rein - Corporate Logo
T#:38161719
Part#: 31126783375
Ships in 3 Business Days
$ 95.99 USD
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Rein Front Sway Bar Bushing - E46
For convertible models with standard suspension For vehicles with standard suspension with production date up to 04/2001 For vehicles with standard suspension For touring models with standard suspension For convertible models with standard suspension. Also for coupe models with standard su...
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Rein - Corporate Logo
T#:363442
Part#: 31351097179
In Stock at Vendor
$ 7.13 USD
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$ 7.13 USD
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23mm diameter sway bar

Rein Rear Bump Stop - E46
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T#:592429
Part#: 33502290319
In Stock at Vendor
$ 11.99 USD
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$ 11.99 USD
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Rubber stop for strut travel - One required per side

Mubea - Corporate Logo
T#:58855564
Part#: 31331098068
Ships on Nov 3, 2026
New Item
$ 68.99 USD
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This front coil spring replaces a cracked or fatigued original. It restores proper ride height and suspension function.
Mubea Front Coil Spring - E46
For vehicles with manual transmission only
Mubea - Corporate Logo
T#:383116
Part#: 31331096184
Ships on Nov 3, 2026
$ 88.99 USD
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$ 88.99 USD
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Replace your cracked springs
Rein Trailing Arm Bushing - E36, E46, E83, Z4
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Rein - Corporate Logo
T#:379801
Part#: 33326771828
Back Ordered
$ 21.99 USD
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Bushing located in the rear lower position of the rear trailing arm


OEM Rein Front Bump Stop - E46 325/330
For sedan models with sport suspension and a production date from 09/2001 For vehicles with sport suspension and a production date from 04/2001 For coupe models with sport suspension and a production date from 09/2001 For coupe models with sport suspension and a production date from 04/2001
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Rein - Corporate Logo
T#:12471
Part#: 31306757046
Ships in 1 Business Day
$ 9.17 USD
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$ 9.17 USD
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Bump stops provide a bottoming cushion on rough roads, limiting hydraulic damper travel to prevent suspension bottoming and damage. They also improve ride quality, softening harsh impacts. Replace them when installing new struts.
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Rein Rear Control Arm Bushing - E36, E46, E83, Z4
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Rein - Corporate Logo
T#:363435
Part#: 33321092247
Back Ordered
$ 28.99 USD
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Upper control arm to subframe bushing
BMW & MINI Coilover Wrench Set
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ECS - Corporate Logo
T#:367171
Part#: ECSCOWRENCHSET
In Stock
Sale - Save 3% $ 78.99

This product was last offered at the strikethrough price on
06-13-2026

$ 76.62 USD
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Sale - Save 3%
$ 78.99

This product was last offered at the strikethrough price on
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$ 76.62 USD
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Revamp Your Suspension with the BMW & MINI Coilover Wrench Set

  • Compatible with BMW and MINI models for versatile use
  • Durable construction ensures long-lasting performance
  • Ergonomic design provides comfortable handling during installation
  • Allows for precise adjustment of coilovers for optimal ride quality

Upgrade your BMW or MINI's suspension system with the BMW & MINI Coilover Wrench Set. This set is compatible with various BMW and MINI models, offering versatile compatibility for a wide range of vehicles. Constructed from durable materials, these wrenches are built to withstand the rigors of frequent use and provide long-lasting performance. The ergonomic design ensures comfortable handling during installation, reducing fatigue and allowing for more efficient work. With the BMW & MINI Coilover Wrench Set, you can easily adjust your coilovers to achieve the optimal ride quality for your vehicle.

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