Drastically improve the looks of your vehicle while improving your vehicle's handling characteristics and/or easily adjust your wheel fitment to allow for the proper clearance when installing parts such as new wheels, big brake kits, or lowering suspension components.Interference from components such as shocks, springs, or control arms are a common issue when installing wheel that are not a direct OE size replacement. By moving your wheels a few millimeters each, you can give yourself enough clearance for proper wheel fitment and give your car a wider stance in the process.

ECS Tuning wheel spacers are constructed of high quality 6061-T6 aircraft grade aluminum and are specifically designed by in-house engineers and cnc machined to exact standards, ensuring the best fitment possible. By carefully measuring the OEM wheel hubs and bore dimensions, these spacers mount with minimal clearance to prevent any vibration, retaining the stock-like vibration free operation. 

This kit includes wheel bolts that are lab tested to meet or exceed ISO 898 class 10.9 mechanical and physical properties to ensure perfect fastening of the wheel to the hub with no issues or potential to snap under aggressive driving conditions.

ECS Tuning is a performance and genuine parts provider that designs their ECS Tuning branded aftermarket automotive parts in-house to ensure the highest quality and affordability possible. Every part's design is subjected to a rigorous test fit and stress test period to guarantee proper fitment and continued reliability for years to come.

This item fits the following BMWs:

2008-2012 E82 BMW 128i 135 1M
​1988-1991 E30 BMW M3
1992-1998 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi 335d 335i 335xi 335i xDrive M3 - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2012 E92 BMW 328i 328xi 328i xDrive 335i 335is 335xi 335i xDrive M3 - Coupe
2007-2012 E93 BMW 328i 335i M3 - Convertible
1982-1988 E28 BMW 524td 528e 533i 535i 535is M5
1989-1995 E34 BMW 525i 530i 535i 540i M5
2004-2010 E60 BMW 525i 525xi 530i 530xi 528i 528xi 528i xDrive 535i 535xi 535i xDrive 545i 550i M5
1982-1989 E24 BMW 633csi 635csi M6
2004-2010 E63 BMW 645ci 650i M6
1981-1987 E23 BMW 733i 735i
1988-1994 E32 BMW 735i 735il 740i 740il 750il
1995-2001 E38 BMW 740i 740il 750il
1990-1999 E31 BMW 840i 840ci 850i 850ci 850csi
1997-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe
2003-2008 E85 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe
2009-2016 Z4 BMW Z4 sDrive28i Z4 sDrive30i Z4 sDrive35i Z4 sDrive35is

Unsure of what size spacer will work best for you? This professional kit includes 1mm, 2.5mm, 5mm, 10mm, and 15mm spacers with wheel studs and nuts for you play with. These are not the same spacers that we sell and they cannot be used to drive on. But with the studs installed the car can be lowered to the ground and rolled to check for clearances. These test fit spacers are drilled to fit the standard BMW 5x120 bolt pattern as well as 4-lug 4x100 (and VW/Audi bolt patterns too). You can stack spacers to achieve the perfect clearance. When you're ready call us to order the spacers you need (Turner spacers come in 3mm, 5mm, 7.5mm, 10mm, 12.5mm, 15mm, 17.5mm, 20mm, 25mm, and 30mm spacer thicknesses).

These spacers are not for driving on. They lack the hubcentric lip that BMW wheels are designed to work with. Driving on studs alone will lead to a failure.

Two ways to buy -

• Own. Just as it says, you buy this kit to own. Perfect for shops or race teams that change wheels or brake components often. For shops you can measure wheel clearance and order the correct spacers the first time around (no wasting inventory or paying return shipping). Note: Kits purchased to Own are not returnable for refunds.
• Rent. Pay the full price but get $110 as a store credit when you return the kit. We keep a modest $19.95 fee for the service. Perfect for DIY and enthusiasts who only need the Test Kit once. Use your store credit to purchase your spacers (or anything else from our catalog).

Wheel Spacer FAQ:
How to measure for wheel spacers
Wheel spacer encyclopedia

Allen Head Bolt

Upgrade your fastening needs with the Allen Head Bolt, a versatile and reliable solution for various applications. Crafted from high-quality materials, these bolts offer exceptional strength and durability. Their allen head design ensures secure tightening and easy access, making them ideal for automotive, construction, and DIY projects. Elevate your projects with the precision and reliability of Allen Head Bolts.

• High-quality materials for exceptional strength
• Secure tightening with allen head design
• Versatile usage for automotive, construction, and DIY projects
• Reliable and durable solution for various applications

Achieving precise exhaust fitment can be tricky—especially when the exhaust hanger has room to slide. This movement can cause annoying rattles or even lead to contact with the underbody or rear bumper. The ECS Tuning Exhaust Locking Collar offers a simple and effective fix. Designed to clamp securely around the exhaust hanger, this collar keeps everything firmly in place, eliminating unwanted movement.

Crafted from high-strength 6031 billet aluminum and finished in a sleek black anodized coating, it delivers both durability and corrosion resistance. With this collar in place, your exhaust stays exactly where it should—no rattles, no surprises.

Product Design:

Made from precision machined 6061 aluminum Black anodized finish Stainless steel M5 X 0.8mm hardware Installation & Support:

Install the locking collar around your exhaust hanger, position the hanger in place, and snug the locking collar down in place against the hanger! ECS Exhaust Hanger Locking Collars are available for 10mm and 12mm exhaust hangers. Please measure your hangers before ordering. The 10mm locking collar can be found HERE.

Upgrade your BMW with ECS Tuning's Stainless Steel Hose Clamps, designed for convenience and durability. With various band widths and German-style T-bolts, these clamps offer easy adjustment to your required diameter. Say goodbye to dealer pricing and enjoy the quality you love at ECS Tuning.

• Full stainless steel construction
• Various band widths available
• German-style T-bolts for easy adjustment
• Convenient solution for hose clamp replacement

Upgrade your BMW's hose clamps with the 77-85mm - 3/4" Band Hose Clamp from Turner Motorsport. These full 304 stainless steel clamps offer convenience and quality without the dealership price tag. German-style T-bolts allow for easy adjustment to your required diameter, ensuring a secure fit every time.

• Made of durable 304 stainless steel for long-lasting performance
• German-style T-bolt design for easy size adjustment
• Convenient band widths for versatile applications
• Quality alternative to dealership pricing

Includes connector housing with terminals and seals. Commonly used for the idle air control valve (IACV).

ECS Tuning replacement harness connectors include all necessary pins and wire seals for a complete harness repair. Whether you have a broken harness connector or need a complete wiring repair, we have the components you need.

Each connector includes an additional terminal in case one becomes lost or damaged during installation.

*OEM cross reference PN# 12521706096 - Commonly used for the idle air control valve (IACV).

Please reference the original part number from the existing connector to confirm fitment, before ordering.

Suggested tools:

Suggested crimping pliers: T#387193
Wire De-pin tools:
12pc De-Pin Tool Set - T#386379
23pc De-Pin Tool Set - T#641943

ECS Tuning Extended Wheel Bolts for BMW

Upgrade your BMW's wheels with ECS Tuning Extended Wheel Bolts, designed for precise fitment and exceptional strength. These bolts meet ISO 898 class 10.9 standards, ensuring top-tier mechanical and physical properties. Lab-tested for quality assurance, they provide peace of mind for your wheel setup.

Benefits:

• Ensures correct fitment with ECS Tuning wheel spacers
• Meets ISO 898 class 10.9 standards for superior strength and durability
• Lab-tested for quality assurance and peace of mind
• Easy installation for hassle-free upgrade

Flush License Plate Bolt - 12mm

Upgrade your vehicle's aesthetics with the Flush License Plate Bolt - 12mm, designed to seamlessly blend into your license plate for a sleek appearance. Crafted from durable materials, this bolt offers both style and functionality. Its low-profile design ensures a clean look while providing secure attachment. Enhance your vehicle's exterior with this easy-to-install accessory.

• Sleek and seamless appearance
• Durable construction for long-lasting use
• Low-profile design for a clean look
• Easy installation process

1/2"/12mm Band Hose Clamp

For reliable hose fastening, opt for the top-tier 1/2"/12mm Band Hose Clamp. Engineered for durability and versatility, this hose clamp ensures secure connections in various applications. Invest in quality and maintain optimal functionality with this essential accessory.

• Versatile clamp suitable for various hose sizes
• Durable construction ensures long-lasting performance
• Provides a secure seal for optimal functionality
• Easy to install and adjust for convenience

ECS Tuning Extended Wheel Bolts for Precise Fitment

Enhance your vehicle's wheel fitment precision with ECS Tuning's extended wheel bolts, designed individually or paired with spacers to ensure accurate compatibility. These bolts are engineered to meet the rigorous ISO 898 class 10.9 standards, ensuring exceptional mechanical and physical properties, including stringent material, hardening, tempering, and proof load strength criteria. Our fasteners undergo lab testing to guarantee compliance with class 10.9 requirements.

Bolt Specifications:

• Diameter: 12mm
• Thread Pitch: 1.5mm
• Length: 45mm

*For proper fitment when using wheel spacers, add the spacer size to the length of the OE wheel bolt (e.g., 27mm Length OE Wheel Bolt + 15mm Wheel Spacer = Requires a 42mm Length Bolt)

ECS Tuning proudly presents extended wheel bolts, available individually or matched with our spacers to ensure precise fitment. These bolts adhere to the stringent ISO 898 class 10.9 standards, guaranteeing exceptional mechanical and physical properties. Lab-tested to confirm class 10.9 compliance, they meet rigorous requirements for material properties, hardening, and proof load strength.

Bolt Specifications:

• Diameter: 12mm
• Thread Pitch: 1.5mm
• Length: 32mm

Note: For wheel spacer installation, add the spacer size to the OE wheel bolt's length for accurate fitment (e.g., 27mm Length OE Wheel Bolt + 15mm Wheel Spacer = Require a 42mm Length Bolt)

• Diameter: 12mm
• Thread Pitch: 1.5mm
• Length: 26mm
• Compliant with ISO 898 class 10.9 standards
• Thorough lab testing for class 10.9 compliance

Upgrade Your BMW Maintenance with Stainless Steel Hose Clamps from ECS Tuning

ECS Tuning introduces premium full stainless steel hose clamps, offering superior quality and convenience for your BMW maintenance. Avoid dealership delays and overpricing by choosing from a selection of band widths, ensuring you receive top-quality hose clamps without overpaying.

Key Benefits:

• Premium full stainless steel hose clamps
• Various band widths for enhanced convenience
• High-quality alternative to dealership pricing
• Readily available stock eliminates waiting time

ECS Tuning proudly introduces extended wheel bolts specifically designed for your Mini. These bolts can be obtained individually or in conjunction with precisely matched spacers, eliminating the guesswork in achieving the correct fitment. Crafted to meet the stringent ISO 898 class 10.9 standards, these high-quality bolts adhere to strict guidelines concerning material properties, hardening, tempering requirements, and proof load strength. Rigorously lab-tested for compliance, these fasteners ensure unparalleled reliability and safety.

Specifications for the bolts:

• Diameter - 12mm
• Thread Pitch - 1.5mm
• Length - 28mm

Note: When integrating wheel spacers, it's crucial to add the spacer size to the OE wheel bolt length to ensure proper fitment (e.g., 27mm Length OE Wheel Bolt + 15mm Wheel Spacer = Requires a 42mm Length Bolt).

• Precisely matched for accurate fitment
• Complies with ISO 898 class 10.9 standards
• Lab-tested for reliability and safety
• Detailed bolt specifications provided for easy selection

Includes connector housing with terminals and seals. Commonly used for the engine oil pressure switch.

ECS Tuning replacement harness connectors include all necessary pins and wire seals for a complete harness repair. Whether you have a broken harness connector or need a complete wiring repair, we have the components you need.

Each connector includes an additional terminal in case one becomes lost or damaged during installation.

Suggested tools:

Suggested crimping pliers: T#387193
Wire De-pin tools:
12pc De-Pin Tool Set - T#386379
23pc De-Pin Tool Set - T#641943

1.5mm X 51mm Metric Buna-N 70 O-ring is the perfect sealing solution for various industrial applications. Made from high-quality Buna-N material, this O-ring provides reliable sealing performance, ensuring leak-free connections. With its metric sizing and 70 durometer hardness, it offers versatility and durability for a wide range of uses.

• High-quality Buna-N material
• Reliable sealing performance
• Metric sizing for versatility
• 70 durometer hardness for durability

Upgrade your hose fittings with the Adjustable Hose Clamp. Designed for versatility and reliability, this clamp provides a secure and adjustable solution for various hose sizes. With its durable construction and easy-to-use design, it ensures leak-free connections in automotive, plumbing, and industrial applications. Say goodbye to loose hoses and enjoy peace of mind with this essential hose clamp.

• Provides secure and adjustable solution
• Durable construction for reliability
• Easy-to-use design for convenience
• Suitable for automotive, plumbing, and industrial applications

Upgrade your BMW's performance with ECS Titanium Wheel Bolts

Designed for weight reduction and durability, these bolts are 50% lighter than steel counterparts, reducing rotational mass for improved handling and acceleration. Crafted from annealed titanium alloy, they undergo rigorous testing to ensure reliability and resistance to fatigue.

Benefits:

• 50% lighter than steel bolts for reduced rotational mass
• CNC'd from annealed titanium alloy for durability
• Tested to class 10.9 fastener proof load requirements for reliability
• Compatible with wheel spacers for versatile fitment

Before installation, ensure thorough cleaning of hub threads to prevent fatigue and cracking of the titanium alloy. Upgrade your BMW with ECS Titanium Wheel Bolts for enhanced performance and durability.

Upgrade your exhaust system with the Stainless Steel Oxygen Sensor (O2) Weld Bung (M18x1.5mm). This high-quality weld bung is made from stainless steel, ensuring durability and resistance to corrosion. It features M18x1.5mm threads, making it compatible with most oxygen sensors. Perfect for custom exhaust setups or replacing damaged bungs, this weld bung is a must-have for any automotive enthusiast.

• Made from high-quality stainless steel for durability and corrosion resistance
• M18x1.5mm threads ensure compatibility with most oxygen sensors
• Ideal for custom exhaust setups or replacing damaged bungs
• Essential for automotive enthusiasts looking to upgrade their exhaust system