BMW Internal Engine Parts

If your engine has higher mileage, don't neglect rod bearing replacement! These bearings are sandwiched between the connecting rod and crankshaft journal and are prone to failure due to overheating, lack of lubrication, or general wear. Replace your rod bearings and prevent a spun bearing.

Starting with ACL’s high-performance bearing shells, our Race Series bearings are built to withstand extreme RPMs and stress. Utilizing a "Duraglide" tri-metal construction and a high-strength overlay plate, these bearings offer superior oiling and heat resistance for high-RPM operation.

Our WPC-treated bearings take ACL’s already impressive design and enhance it even further. The WPC treatment process strengthens and smooths the bearing surface by firing high-speed, ultra-fine particles at the bearing shells, reducing friction and improving durability. This advanced surface treatment ensures smoother operation and improved heat dissipation, which are critical for any high-performance engine.

Kit includes

Turner Motorsport WPC-Treated Race Series Rod Bearing Shells (16) Genuine BMW Connecting Rod Bolts (16) Hardware for Oil Pan & Oil Sump Oil filter Liqui-Moly Molygen 5W-40 (6L) Drain Plug Turner Motorsport Oil Reminder Sticker Oil pan gasket RedLine assembly lube (4 oz.)

Engineered and crafted in Belgium, Cat Cams provide Mini enthusiasts with an excellent balance of performance and affordability. Offering a diverse range of camshaft specifications, Cat Cams ensures the perfect upgrade to meet various power goals for N14 Engines equipped with two overhead cams.

Key Benefits:

• Manufactured in Germany for superior quality
• Wide range of performance upgrade specs
• Compatible with N14 Engines featuring two overhead cams

Enhance the performance of your Mini's N14 1.6L engine with this pair of Hot Street Camshafts from Cat Cams. Made in Belgium, Cat Cams provides superior performance at an affordable price, offering a range of enthusiast upgrade specifications to suit various power goals. Ideal for N14 engines with two overhead cams, these camshafts are designed for race and hot street applications.

• Made in Germany for superior quality
• Designed for N14 1.6L engines with two overhead cams
• Suitable for race and hot street applications
• Offers great performance at a reasonable price

E Pistons 8.5:1 Piston Kit - BMW S14B23 Engine (Set of 4)

Unleash the full potential of your BMW S14B23 engine with the JE Pistons 8.5:1 Compression Kit, engineered for maximum strength and reliability in forced induction builds. Perfect for turbocharged or supercharged applications, these pistons are designed to handle high boost levels, ensuring your engine can withstand extreme pressures while delivering smooth, consistent performance.

Key Benefits:

• Optimized Compression (8.5:1): Lower compression ratio designed specifically for turbo or supercharged setups, helping manage cylinder pressures for greater tuning flexibility and boost potential.
• Forged for Toughness: Crafted from 2618 aluminum alloy, these pistons are forged to withstand extreme stress and temperature, making them ideal for high-boost, high-revving engines.
• Thermal Efficiency & Durability: Enhanced heat dissipation design reduces the risk of detonation, allowing your engine to run cooler under heavy load.
• Friction-Reducing Skirt Coating: Helps to reduce wear, improving the longevity of both the pistons and the engine, even under intense driving conditions.
• Complete Installation Kit: Comes with four pistons, rings, wrist pins, and locks, providing everything you need for a smooth installation process.

Why Choose JE Pistons?

JE Pistons are a trusted name in motorsport for delivering unbeatable strength and performance. This 8.5:1 piston kit allows you to push your BMW S14B23 engine to new limits with confidence, whether it’s for track use, drag racing, or a high-performance street build.

Applications:

• Fits BMW S14B23 Engines (E30 M3, high-performance builds)
• Ideal for turbocharged or supercharged configurations.

Technical Specifications:

• Compression Ratio: 8.5:1 for optimal forced induction performance.
• Material: Forged 2618 aluminum alloy for unmatched strength.
• Bore Sizes: Customizable options for overbore requirements.

E Pistons 8.5:1 Piston Kit - BMW S14B23 Engine (Set of 4)

Unleash the full potential of your BMW S14B23 engine with the JE Pistons 8.5:1 Compression Kit, engineered for maximum strength and reliability in forced induction builds. Perfect for turbocharged or supercharged applications, these pistons are designed to handle high boost levels, ensuring your engine can withstand extreme pressures while delivering smooth, consistent performance.

Key Benefits:

• Optimized Compression (8.5:1): Lower compression ratio designed specifically for turbo or supercharged setups, helping manage cylinder pressures for greater tuning flexibility and boost potential.
• Forged for Toughness: Crafted from 2618 aluminum alloy, these pistons are forged to withstand extreme stress and temperature, making them ideal for high-boost, high-revving engines.
• Thermal Efficiency & Durability: Enhanced heat dissipation design reduces the risk of detonation, allowing your engine to run cooler under heavy load.
• Friction-Reducing Skirt Coating: Helps to reduce wear, improving the longevity of both the pistons and the engine, even under intense driving conditions.
• Complete Installation Kit: Comes with four pistons, rings, wrist pins, and locks, providing everything you need for a smooth installation process.

Why Choose JE Pistons?

JE Pistons are a trusted name in motorsport for delivering unbeatable strength and performance. This 8.5:1 piston kit allows you to push your BMW S14B23 engine to new limits with confidence, whether it’s for track use, drag racing, or a high-performance street build.

Applications:

• Fits BMW S14B23 Engines (E30 M3, high-performance builds)
• Ideal for turbocharged or supercharged configurations.

Technical Specifications:

• Compression Ratio: 8.5:1 for optimal forced induction performance.
• Material: Forged 2618 aluminum alloy for unmatched strength.
• Bore Sizes: Customizable options for overbore requirements.

JE Pistons BMW S14B23 13:1 Compression Piston Kit - 3.7086in Bore (Set of 4)

Elevate your BMW S14B23 engine’s performance with the JE Pistons 13:1 Compression Piston Kit, featuring a 3.7086-inch bore size. Designed for high-compression, naturally aspirated builds, this piston kit delivers enhanced power, faster throttle response, and exceptional reliability, making it the perfect choice for serious racers and high-performance enthusiasts alike. With JE’s world-class forged piston technology, you’ll get unmatched strength and durability to handle the most demanding environments.

Key Features:

• 13:1 High-Compression Ratio: Optimized for naturally aspirated engines, the 13:1 compression ratio maximizes cylinder pressure for increased horsepower, torque, and efficiency. Perfect for high-RPM applications.
• 3.7086in Bore Size: Specifically designed for the BMW S14B23 engine, this precise bore size ensures optimal fitment and superior combustion, providing the ideal foundation for high-performance builds.
• Forged 2618 Aluminum Construction: Built from JE’s 2618 forged aluminum alloy, these pistons offer exceptional strength, heat resistance, and durability, making them capable of withstanding extreme pressures and temperatures.
• Advanced Combustion Chamber Design: Piston crowns are engineered to improve combustion efficiency, promoting smoother, more controlled combustion for better performance and reduced detonation risks.
• Low-Friction Skirt Coating: A friction-reducing coating on the piston skirts minimizes wear and tear, ensuring smooth operation and prolonging the life of both the pistons and the engine.
• Complete Installation Kit: This set comes with four pistons, rings, wrist pins, and locks, offering everything you need for a full upgrade to your S14B23 engine.

Built for Power & Precision:

Engineered for peak performance, JE Pistons are known for their precision and durability. This 13:1 compression kit is tailored for those who want to push their BMW S14B23 engine to its limits, whether on the track or on the street. The 3.7086in bore ensures exact fitment and optimal combustion dynamics, maximizing both power output and reliability.

Application:

• Fits BMW S14B23 Engines – Perfect for high-compression naturally aspirated builds, race applications, or high-performance street cars.
• Ideal for track-focused and high-RPM setups.

Technical Specs:

• Compression Ratio: 13:1 for naturally aspirated engines.
• Bore Size: 3.7086 inches, designed for a precise fit.
• Material: Forged from 2618 aluminum alloy for superior strength and heat tolerance.

JE Pistons BMW S14B20 13.0:1 Compression Piston Kit - Set of 4

Unlock your BMW S14B20 engine’s true potential with the JE Pistons 13.0:1 High-Compression Piston Kit. Specifically engineered for naturally aspirated performance, these pistons are designed to deliver higher power output, sharper throttle response, and greater engine efficiency, making them perfect for track-focused builds or high-revving street machines. Built from high-strength, lightweight forged aluminum, these pistons offer the durability and precision needed to withstand the extreme demands of motorsport applications.

Key Benefits:

• 13.0:1 Compression Ratio: Elevate engine performance with a higher compression ratio that optimizes cylinder pressure for maximum power, torque, and acceleration in naturally aspirated setups.
• Forged for Strength and Lightness: Constructed from 2618 forged aluminum alloy, these pistons provide the ideal balance of strength and weight, ensuring maximum durability without sacrificing engine speed.
• Efficient Combustion Design: Piston crown engineered to enhance combustion chamber dynamics, promoting cleaner, more efficient fuel burn while preventing detonation at high RPMs.
• Low-Friction Skirt Coating: Coated piston skirts reduce friction during operation, extending the life of your pistons and improving overall engine performance.
• Complete Installation Package: Includes four forged pistons, rings, wrist pins, and locks—everything you need to take your S14B20 engine to the next level.

Performance & Precision:

With JE Pistons, you get race-proven reliability and cutting-edge engineering. The 13.0:1 compression ratio boosts performance without compromising on durability, ensuring your BMW S14B20 engine delivers consistent, high-level power in any driving situation.

Application:

• Fits BMW S14B20 Engines (perfect for high-performance street or track builds).
• Ideal for naturally aspirated setups focused on maximizing power and efficiency.

Technical Specs:

• Compression Ratio: 13.0:1, optimized for naturally aspirated engines.
• Material: Forged 2618 aluminum for superior strength and heat resistance.
• Bore Sizes: Custom bore sizes available, including overbore options.

CP Carrillo, renowned for its exceptional forged pistons and rods, is your gateway to taking your engine's performance to the next level. Whether you're working on a custom-built powerhouse or a high-power output engine, these forged pistons are engineered to deliver lasting and exceptional performance.

Key Specifications:

• Compression Ratio (CR): 10.5
• Dish/Dome CC: -0.2

Features:

• Available in standard or oversized options
• Deep valve relief depth to accommodate high-lift camshafts
• Designed for +1mm valve sizes
• Custom skirt cam and barrel design
• Equipped with accumulator grooves
• Crafted from high-strength aluminum forgings
• Compatibility with oversize valves, higher lift cams, and high-performance rings
• Fully CNC-machined and balanced to +/-1 gram
• Includes wrist pins at no additional cost
• Features double pin oilers and a force-fed oil ring
• Pick lock grooves for effortless lock removal
• Pin fitting included

Unleash the true power of your engine with CP Carrillo's Forged Pistons - the ultimate choice for performance and durability.

MINI W10 W11 CP Forged Piston & Ring Set (Set Of 4) - 77.5mm (Plus Size +0.5mm) by CP Carrillo is designed to elevate the performance of your MINI engine to new heights. Renowned for their high-quality forged pistons and rods, CP Carrillo provides these pistons for custom-built engines seeking high power outputs.

• Available in standard or oversized sizes: Offers flexibility for different engine builds.
• Deep valve relief depth: Accommodates high-lift camshafts.
• Made for +1mm valve sizes: Suitable for performance enhancements.
• Custom skirt cam and barrel design: Enhances performance and reliability.
• Accumulator grooves: Improve oil distribution.
• High-strength aluminum forgings: Ensures durability and longevity.
• Compatible with oversized valves and higher lift cams: Versatile for high-performance applications.
• Fully CNC-machined and balanced to +/-1 gram: Precision engineering for optimal performance.
• Wrist pins included: Adds value with no additional cost.
• Double pin oilers and force-fed oil ring: Ensures effective lubrication.
• Pick lock grooves for easy lock removal: Facilitates maintenance.
• Pin fitting included: Ready for installation.
• Compression ratio of 8.3:1: Provides a balanced power output.