Boost Your BMW's Engine with JE Pistons

Upgrade your BMW's engine with the JE Pistons Forged Piston Set designed for the M52 engine. These high-quality forged pistons feature a diameter of 84mm and a compression ratio of 10.5:1, ensuring improved performance and reliability for your BMW.

• Enhances engine performance and reliability
• Precision-engineered for optimal fit and function
• High-quality forged construction ensures durability
• Designed specifically for the M52 engine

Experience peace of mind with Achilles Motorsports' upgraded oil pump shaft kit, designed specifically to address the well-known harmonics-related issues plaguing the M54 engine. Say goodbye to worries about oil pump shaft failures causing sudden oil pressure drops.

Achilles Motorsports goes above and beyond, crafting their oil pump shafts from the toughest materials and subjecting them to rigorous heat treatment processes for maximum strength. The core of this kit features a hardened Chromoly shaft, precision centerless ground to ensure absolute accuracy. What sets this kit apart is its exclusive square key lock system, preventing gear slippage and reinforcing the gear mounting area for added durability.

No more concerns about the oil pump nut coming loose—Achilles Motorsports has replaced it with an extended-length bolt, EDM drilled for safety wire, ensuring a secure fit in all conditions. Avoid costly engine repairs due to oil pump failures by taking proactive measures with this comprehensive upgrade kit.

This kit, curated by the team at Turner Motorsport, includes everything you need for a complete upgrade:

Achilles Motorsports Upgraded Oil Pump Shaft Liqui Moly Molygen 5w-40 Oil (6 liters) Hengst Oil Filter Oil Drain Plug and Reminder Sticker Elring Oil Pan Gasket IWIS Oil Pump Chain Upgrade your M52TU/M54 engine and shield it from potential catastrophic failure with this meticulously crafted upgrade kit from ECS Tuning.

This tensioner is for either the Water Pump or Alternator on cars with the mechanical belt tensioner system. Please check to ensure your car does not have the hydraulic tensioner. This tensioner comes with the pulley assembly.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

Only for cars with Mechanical belt tensioner systems.

This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
1991-1995 E34 BMW 525i
1997-2003 E39 BMW 525i 528i 530i
2004-2005 E60 BMW 525i 530i
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
1997-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2003-2005 Z4 BMW Z4 2.5i Z4 3.0i

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 1/2"/12mm Band Hose Clamp - 20-32mm

Once again, ECS Tuning has found a way to make life easier for working on your car. Need new hose clamps but don't want to wait to order it from the dealership or pay more than you should for a hose clamp? That's where we come in! These are full 304 stainless steel hose clamps with various band widths for your convenience. They are German style using T-bolts to adjust in size to your required diameter. Never pay dealer pricing again, but still get the quality you love here at ECS Tuning.

• Premium 304 stainless steel construction for durability
• German-style T-bolt design for easy size adjustment
• Versatile band widths cater to different hose sizes
• Eliminates the need for expensive dealership purchases
• Ensures secure and reliable hose connections

The OEM INA Tensioner Bearing allows the belt tensioner arm to rotate and apply pressure to the serpentine belt. With a bad bearing, the arm may seize up and prevent the tensioner from working properly.

OEM Schaeffler (INA, LuK, & FAG) is an engineering company that focuses on high-performance, precision manufacturing. With their individual brands INA, Luk, and FAG providing exceptionally high quality parts directly to BMW, as well as countless other automotive companies, their history of reliability and variety of offered parts makes Schaeffler a go-to replacement parts provider for all of us here at Turner Motorsport.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform