Includes connector housing with terminals and seals. Commonly used for the crankshaft position sensor.

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# 12521433916 - Commonly used for the crankshaft position sensor.

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 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.

Ensure your BMW's wheels are securely fastened with ECS Tuning's Polished Conical Seat Wheel Bolts. These wheel bolts undergo stringent testing and safety standards, featuring a corrosion-resistant coating for long-lasting durability. Designed with a conical seat, these bolts are compatible with most aftermarket wheels, providing a secure fit. Upgrade to Polished Conical Seat Wheel Bolts from ECS Tuning for peace of mind on the road.

• Corrosion-resistant coating ensures longevity
• Conical seat design for compatibility with most aftermarket wheels
• Securely fastens wheels to your BMW
• Reliable performance meeting stringent testing and safety standards
• Ideal for use with wheel spacers for proper fitment

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

Enhance your BMW's hose connections with this sleek and reliable smooth clamp. Crafted specifically for BMW models, this clamp ensures secure and leak-free connections for hoses. Experience improved durability and functionality in your BMW's system with this purpose-built smooth clamp.

Key Benefits:

• Secure and leak-free hose connections
• Designed specifically for BMW models
• Enhanced durability for long-term use

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

Upgrade your BMW's performance with ECS Titanium Wheel Bolts, specially designed for weight reduction and durability. Crafted from annealed titanium alloy, these bolts are 50% lighter than steel bolts of the same size, reducing rotational mass on your vehicle. Engineered to withstand high demands, these wheel bolts have undergone rigorous testing, meeting class 10.9 fastener proof load requirements without signs of fatigue or failure. Check out the specifications:

• Diameter: 14mm
• Thread Pitch: 1.5mm
• Length: 27mm
• Head: 17mm
• Seat: Conical Seat

Ensure the hub threads are clean before installing ECS Titanium Wheel Bolts to prevent potential fatigue or cracking due to residual zinc from prior bolts.

ECS Titanium Wheel Bolts

Upgrade your BMW's performance with ECS Titanium Wheel Bolts, designed for weight savings and durability. These premium bolts are perfect for performance enthusiasts seeking high-quality components that won't rust. Crafted from annealed titanium alloy, they offer a significant weight reduction of 50% compared to steel bolts of the same size, reducing rotational mass for improved performance.

Benefits:

• 50% lighter than steel bolts for reduced rotational mass
• CNC'd from annealed titanium alloy for exceptional strength and durability
• Tested to class 10.9 fastener proof load requirements without signs of fatigue or failure
• Rust-resistant construction ensures long-lasting performance
• Compatible with BMW and other vehicles with 14mm diameter, 1.5mm thread pitch, and 17mm head size

Protect your BMW E53 X5 with our ECS in-house engineered Aluminum Engine and Transmission Skid Plate Kit. Constructed from 1/4" (6.35mm) thick 5052 aluminum our skid plate is sure to stand up to harsh on road and mild off-road conditions that your X5 was not prepared for from the factory.

For the daily driver at stock height or the enthusiast with a desire for light off-roading, our ECS Overland Skid Plates add peace of mind and protection against road debris, rocks and rubbish and other road hazards looking to damage your engine and transmission.

Instead of buying each component separately we combined the engine and skid plates together for an awesome package deal!

PART DESIGN

Precisely designed and engineered in-house with 3D laser scanning for accuracy and perfect fitment

Manufactured in the U.S.A. from high strength 1/4” (6.35mm) 5052 aluminum

Design features protection for the transmission front and rear section

Ground clearance is not affected

KIT CONTENTS

1/4" Aluminum Front Skid Plate

Black Powder Coated Skid Plate Brackets

1/4" Aluminum Front Section Skid Plate

1/4" Aluminum Rear Section Skid Plate

Installation Hardware

14x1.5x45mm - Conical Seat Wheel Bolt offers a blend of durability and style with its high-quality black zinc coating. Designed to meet stringent safety standards, these wheel bolts feature a conical seat for compatibility with most aftermarket wheels, ensuring secure wheel fastening.

• Durable Coating: Black zinc finish provides extended lifespan and a sleek appearance.
• Secure Fitment: Conical seat design ensures compatibility with a wide range of aftermarket wheels.
• Safety Compliance: Meets rigorous safety standards for reliable performance.
• Versatile Application: Ideal for use with wheel spacers—ensure to adjust bolt length accordingly.

With these wheel bolts from Turner Motorsport, vehicle owners can achieve both enhanced aesthetics and reliable wheel security.

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.

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

If you own an X5 this is an essential product to have. We believe all vehicles should have full underbody protection with the way the roads are taken care of. Between animals, pot holes and other road hazards this ECS skid plate not only protects your vehicle but gives you the peace of mind that your vehicle is safe.

For the daily driver at stock height or the enthusiast with a desire for light off-roading. Protect your BMW E53 X5 with the ECS in-house engineered Aluminum Transmission Skid Plate Kit. Constructed from 1/4" (6.35mm) thick 5052 aluminum, this skid plate is sure to stand up to harsh on road and mild off-road conditions that your X5 did not come with from the factory.

PART DESIGN

Precisely designed and engineered in-house with 3D laser scanning for accuracy and perfect fitment

Manufactured in the U.S.A. from high strength 1/4” (6.35mm) 5052 aluminum

Design features protection for the transmission front and rear section

Bolts on

Ground clearance is not affected

KIT CONTENTS

1/4" Aluminum Front Section Skid Plate

1/4" Aluminum Rear Section Skid Plate

Installation Hardware

PRODUCT DEVELOPMENT

ECS Aluminum Skid Plate Kit was designed, engineered, tested and quality inspected by the ECS Research and Development team in Wadsworth, Ohio facility. ECS strives for the highest level of precision and quality through leading-edge product development technology including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling and rigorous long term product testing.

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

Upgrade your BMW's wheel bolts with ECS Titanium Wheel Bolts from Turner Motorsport, ideal for performance enthusiasts seeking weight savings and high-quality construction. These titanium wheel bolts are 50% lighter than steel bolts of the same size, reducing rotational mass on the vehicle. CNC'd from annealed titanium alloy, they meet class 10.9 fastener proof load requirements without signs of fatigue or failure. Ensure proper fitment and longevity for your BMW's wheels with ECS Titanium Wheel Bolts.

• 50% lighter than steel bolts for reduced rotational mass
• CNC'd from annealed titanium alloy for durability
• Resistant to rust and corrosion for long-lasting performance
• Compatible with BMW models
• Easy to install and maintain

Enhance Wheel Security with ECS Tuning's Black Conical Seat Wheel Bolts

Elevate your wheel safety with ECS Tuning's Black Conical Seat Wheel Bolts. These bolts are crafted to adhere to the most rigorous safety standards while sporting a durable black zinc coating, ensuring prolonged longevity and a sleek style upgrade. Engineered with a conical seat, they're compatible with most aftermarket wheels, delivering a secure and snug fit.

Ensure the proper fastening of your wheels with these high-quality bolts, designed specifically for your peace of mind.

Bolt Specifications:

• Diameter: 14mm
• Thread Pitch: 1.5mm
• Length: 35mm

Note: When using wheel spacers, add the spacer size to the OE wheel bolt length for correct fitment (e.g., 27mm OE Wheel Bolt + 15mm Wheel Spacer = Require a 42mm Length Bolt).

Silicone Coupler - Straight 3" ID (76.20mm) x 3" L

No matter the project, ECS Tuning silicone couplers and elbows offer a high-quality, precision-engineered solution to your needs. Whether you're installing an intercooler, fabricating a custom intake system, or whatever else you can dream up, ECS Tuning has you covered.

• High-quality silicone construction for durability
• Precision-engineered design ensures a perfect fit
• Versatile solution for various automotive projects
• Enhances performance and reliability
• Compatible with BMW and other vehicles

• Diameter: 14mm
• Thread Pitch: 1.5mm
• Length: 28mm
• Corrosion-resistant coating for durability
• Designed for compatibility with most aftermarket wheels

BMW Conical Seat Wheel Bolt - 14x1.5x55mm

Upgrade your BMW with the premium quality BMW Conical Seat Wheel Bolt - 14x1.5x55mm. Crafted with precision engineering, this bolt ensures a secure fit and enhances the overall performance of your vehicle. With its durable construction and exact specifications, it's the perfect addition for any BMW enthusiast.

• Precision-engineered for BMW vehicles
• Durable construction for long-lasting performance
• Exact specifications ensure a secure fit
• Enhances overall performance of the vehicle