Upgrade your exhaust system with the Downpipe To Cat-Back Reducer.

Engineered for optimal performance and durability, this reducer allows for seamless connection between your downpipe and cat-back exhaust system. Its high-quality construction ensures a tight seal, reducing exhaust leaks and enhancing overall exhaust flow. With easy installation and compatibility with various exhaust systems, this reducer is a must-have for any performance enthusiast.

• Allows for seamless connection between downpipe and cat-back exhaust
• High-quality construction for durability
• Tight seal reduces exhaust leaks
• Enhances overall exhaust flow
• Easy installation and compatibility with various exhaust systems

ECS Silicone Coupler

Upgrade your BMW with the ECS Silicone Coupler. This straight 3 5/8" ID (92mm) x 3" L coupler is designed to enhance your vehicle's performance and durability. Crafted from high-quality silicone, it ensures long-lasting reliability and superior performance.

• Enhances vehicle performance
• Durable construction for long-lasting reliability
• Specifically designed for BMW vehicles

Enhance Your BMW's Aesthetic with ECS UNIVERSAL Exhaust Tips - 4.0" Titanium - Burnt Finish - Pair

• Elevates the look of your BMW's exhaust system
• Constructed from high-quality titanium for durability
• Features a stylish burnt finish for a unique appearance
• Easy to install and compatible with most exhaust systems

Upgrade the appearance of your BMW's exhaust system with the ECS UNIVERSAL Exhaust Tips - 4.0" Titanium - Burnt Finish - Pair. Crafted from high-quality titanium, these exhaust tips are not only durable but also add a touch of sophistication to your vehicle. The burnt finish enhances the overall aesthetics, giving your BMW a unique and eye-catching look. Installation is a breeze, and these tips are designed to be compatible with most exhaust systems, ensuring a seamless upgrade experience.

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:
1997-2003 E39 BMW 525i 528i 530i 540i M5

Meet modern emission regulations while preserving engine performance with the ECS Baffled Oil Catch Can. Designed for BMW and MINI vehicles, this system efficiently captures blow-by gases, preventing excessive oil vapor ingestion into the intake tract. The innovative 4-chamber baffle system maximizes oil/air separation, reducing carbon build-up and pollutants. Featuring a 1/4" drain fitting for easy maintenance, this catch can minimizes oil deposits, ensuring cleaner emissions and enhanced engine performance.

Key Benefits:

• Efficient 4-chamber baffle system for maximum oil/air separation
• Recirculated design reduces oil ingestion, promoting cleaner emissions
• Durable 6061-T6 billet machined body with anodized black finish for longevity
• Integrated dipstick and sealed reservoir for easy oil inspection and maintenance
• Serviceable design with removable baffle plates for cleaning
• Easy installation with customizable mounting options and leak-free fittings
• Engineered and manufactured in the USA for superior performance and durability

Note: Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.

Modern emission regulations require a closed PCV/Breather system for cleaner operation. However, inefficient oil particle capture can lead to excessive oil vapor ingestion, causing carbon buildup, reduced performance, and fuel economy. ECS Tuning's updated ECS Baffled Oil Catch Can, now with an easy-to-empty 1/4" drain fitting, is engineered to collect toxic blow-by gases, minimize carbon deposits, and reduce oil contamination within engine oil. Recirculating oil vapor ensures emissions compliance without venting to the atmosphere.

• Key Features:
• Highly Efficient Oil Separator: Strategically positioned 4 chamber baffle system maximizes oil/air separation and minimizes oil droplets in the intake tract.
• Integrated Dipstick: Knurled and black anodized oil dipstick simplifies oil volume inspection.
• Reservoir: Available in 6oz or 8oz capacity with a 1/4" NPT drain plug fitting.
• Serviceable: Easily removable baffle plates and drain plug for cleaning.
• Easy/Customizable Installation: Combine with the ECS Universal Bracket Kit for simplified installation and adjustable mounting locations.
• Leak-Free Fittings: Machined -10AN ORB (O-Ring Boss) fittings available for secure connections (fittings sold separately).

Black Chrome UNIVERSAL Swivel Exhaust Tip - 4.0" offers both style and adjustability with its innovative design. This exhaust tip features a unique swivel collar that allows for precise alignment and perfect fitment. The tip can be adjusted to any direction, and once set, it remains securely in place by tightening the hex bolt to 14 ft-lbs (19 Nm).

• Precision Laser Etched Logo: Each tip includes a laser-etched logo for a premium look.
• Durable Construction: Built with chrome-plated nuts, a 304SS cap screw, clamp, insert ring, and exhaust tip for longevity.
• Stylish Design: Features a slant cut, double-wall construction, and rolled edge for a striking appearance.
• Versatile Fitment: Available in a 4.0" outlet and finished in a sleek black chrome.
• Dimensions:
  • Inlet Size: 3.0"
  • Overall Length: 7.0" (6.0" Tip + 1.0" Clamping Surface)
  • Outlet Size: 4.0"
  • Outlet Style: Double Wall, Rolled Edge, Slant Cut

Modification may be required for proper fitment.

ECS Tuning 304 Stainless Steel Hose Clamps

Revolutionize your car maintenance with ECS Tuning's premium 304 stainless steel hose clamps. Eliminate dealership delays and inflated prices! These German-style clamps utilize T-bolts for hassle-free diameter adjustment. With various band widths available, these durable clamps ensure reliability without the hefty cost. Experience dealership-quality products at affordable rates, exclusively at ECS Tuning.

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

Includes connector housing with terminals and seals. Commonly used for the pencil-style ignition coil connector.

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# 12527519996 - Commonly used for the pencil-style ignition coil connector.

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 lab tests its fasteners to ensure they meet all 10.9 specifications.

Wheel Bolt specs:

• Diameter - 14mm
• Thread Pitch - 1.25mm
• Length - 33mm

If installing wheel spacers, measure your current wheel bolt's length and add the width of your spacer to determine correct extended bolt length. 

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

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.

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 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

ECS Tuning lab tests its fasteners to ensure they meet all 10.9 specifications.

Wheel Bolt specs:

• Diameter - 14mm
• Thread Pitch - 1.25mm
• Length - 50mm

If installing wheel spacers, measure your current wheel bolt's length and add the width of your spacer to determine correct extended bolt length. 

Is your BMW hood emblem showing signs of wear and tear?

If it's cracked or faded, it's time for a replacement. Introducing the Roundel removal tool, designed specifically for effortless removal of your old emblem and installation of the new one. Made with durable nylon, this tool is both thin enough to fit under the roundel and strong enough to avoid breakage. Say goodbye to your old emblem with ease and give your BMW a fresh, shiny upgrade.

Benefits:

• Effortlessly removes old hood emblems
• Facilitates easy installation of new emblems
• Durable nylon construction ensures longevity
• Compatible with various BMW models

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

Ensure secure hose connections with the 1/2"/12mm Band Hose Clamp. This versatile clamp provides a tight and reliable seal for various hose sizes, making it ideal for automotive, plumbing, and industrial applications. With its durable construction and easy installation, the 1/2"/12mm Band Hose Clamp is a practical solution for preventing leaks and maintaining efficiency.

• Provides a tight and reliable seal
• Versatile clamp for various hose sizes
• Suitable for automotive, plumbing, and industrial applications
• Durable construction ensures long-lasting use