BMW Internal Engine Parts for BMW 3 Series E30 (1984-1991)

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Rebuilding your engine or giving your cylinder head an overhaul? Internal engine components covers parts that are located within the engine block and cylinder head. Examples include: timing chains and tensioners, rocker arms, rod bolts and studs, head bolts, valve springs, connecting rods, and more. These are Genuine BMW engine parts, performance upgrades, or approved aftermarket brands that have a long track record of reliability and quality.

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Ina - Corporate Logo
T#:4469
Part#: 11311743187
In Stock
$ 67.65

This product was last offered at the strikethrough price on
05-06-2026

$ 51.99 USD
Free Shipping on orders $49 and up
$ 51.99 USD
Free Shipping on orders $49 and up

This timing chain tensioner keeps the tension rail properly positioned on the BMW M42 and M44 4 cylinder engine.

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!

This item fits the following BMWs:
1990-1991 E30 BMW 318i 318is 318ic
1992-1998 E36 BMW 318i 318is 318ti 318ic
1997-1999 Z3 BMW Z3 1.9

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VAC Motorsports - Corporate Logo
T#:23847551
Part#: CP-FPS-M20-B25
Ships in 2 Business Days
$ 1,399.99 USD
Free Shipping on orders $49 and up

Elevate Your Engine's Performance with Customizable CP Pistons

When it comes to optimizing your engine's performance, flexibility is key. That's why we offer a range of CP pistons with customizable compression ratios to cater to your specific needs. Whether you're embarking on a basic engine rebuild, planning to implement a low boost turbo or supercharger, or aiming to maximize power with high-performance camshafts, we have the ideal piston solution for you.

Our collaboration with CP ensures that you'll receive pistons of the highest quality, meticulously designed to meet the most demanding expectations. These pistons are a top choice for high-performance and racing engines.

We maintain a diverse selection of compression ratios in stock, making it convenient to find the right fit for your project. And if you require a custom piston application, our efficient service has you covered.

  • BORE: 84mm
  • Rod Length: 135mm
  • Compression Ratio: 8.5:1
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VAC Motorsports - Corporate Logo
T#:638307
Part#: VAC-HPRBS-S14STD
Ships on Aug 4, 2026
$ 249.99 USD
Free Shipping on orders $49 and up
VAC Rod Bearing Sets are specially coated to reduce friction to a minimum; enabling lower temps and faster revolutions in your expensive S14 engine. The coated bearings are thermal breakdown resistant, helping to prevent premature engine failures under stress when things are most critical. The rod bearing area is a common stress area in the S14, these bearings can last much longer than any normal bearing sets and are used in all of VAC's highest performance BMW engine builds. These bearings have become a favorite product of all of VAC's race and engine building customers around the globe who have reported unparalleled wear characteristics under all conditions. Made for VAC by the same company who manufactures for the US military, NASCAR teams, and other customers that require "mission-critical" quality. If you are looking for high-performance rod bearings, this is the set for your S14. VAC Tech Notes: As with all bearings, please check your tolerances and size before installation. Due to the specialized tools needed, professional install recommended. There are no returns available on any engine bearings.
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VAC Motorsports - Corporate Logo
T#:22591977
Part#: CP-FPS-M20-B25-8
Ships in 7 Business Days
$ 1,399.99 USD
Free Shipping on orders $49 and up

Elevate Your Engine's Performance with Customizable CP Pistons

When it comes to optimizing your engine's performance, flexibility is key. That's why we offer a range of CP pistons with customizable compression ratios to cater to your specific needs. Whether you're embarking on a basic engine rebuild, planning to implement a low boost turbo or supercharger, or aiming to maximize power with high-performance camshafts, we have the ideal piston solution for you.

Our collaboration with CP ensures that you'll receive pistons of the highest quality, meticulously designed to meet the most demanding expectations. These pistons are a top choice for high-performance and racing engines.

We maintain a diverse selection of compression ratios in stock, making it convenient to find the right fit for your project. And if you require a custom piston application, our efficient service has you covered.

  • BORE: 85mm
  • Rod Length: 135mm
  • Compression Ratio: 8.8:1
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VAC Motorsports - Corporate Logo
T#:34583154
Part#: CP-FPS-M20-B25A
Ships on Aug 4, 2026
$ 1,399.99 USD
Free Shipping on orders $49 and up
Elevate your engine's performance with a choice of compression ratios that suit your needs. Opt for stock compression when conducting a basic engine rebuild or for low boost turbo or supercharger applications. If you plan to run high-performance camshafts, added compression can significantly enhance your engine's capabilities. On the other hand, if you're aiming for a big boost turbo setup, low compression is the way to go. CP and this distributor have collaborated closely to bring you the finest pistons for your high-performance or racing engine. These pistons are meticulously crafted to meet the most rigorous standards and are unrivaled in quality. Piston Specifications: BORE: 84.5mm Rod Length: 135mm Compression Ratio: 8.8:1
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Packaged by Turner - Corporate Logo
T#:36066227
Part#: 11241310515KT2
Ships on Jan 12, 2027
Sale - Save 16% $ 769.99

This product was last offered at the strikethrough price on
05-03-2026

$ 650.52 USD
Free Shipping on orders $49 and up
Sale - Save 16%
$ 769.99

This product was last offered at the strikethrough price on
05-03-2026

$ 650.52 USD
Free Shipping on orders $49 and up

If you're the proud owner of an S14-equipped, chances are you're passionate about enhancing your vehicle's performance and longevity. One crucial upgrade that can significantly improve your driving experience is Turner Motorsport's WPC Rod Bearing Replacement Kit, designed for enhanced durability and wear protection. Prevent costly mechanical failures and increase engine life with our WPC-Treated Performance Rod Bearing Service Kit!

Enhanced Durability: The WPC Performance Rod Bearing Replacement Kit is designed with superior materials and manufacturing processes. WPC treatment reinforces the surface of the bearings, making them highly resistant to wear, which is essential for aging engines like the S14. This durability ensures your engine will stand the test of time, even under strenuous driving conditions. Improved Performance: By reducing friction and wear, WPC-treated rod bearings allow for smoother and more efficient engine operation. This translates into increased power and responsiveness, providing you with a more exhilarating driving experience. Whether you're tearing up the track or enjoying a spirited weekend drive, you'll notice a difference in your vehicle's performance. Preventative Maintenance: Proactively replacing your rod bearings and bolts with the WPC Performance Kit can prevent potential engine failures. As engines age and accumulate miles, wear and tear become inevitable. These components help you address this issue head-on, preventing costly engine damage and repairs down the road. This is especially crucial for BMW E30 M3 owners who value their investment. Long-Term Cost Savings: While the initial investment in a WPC Performance Rod Bearing Replacement Kit may seem substantial, it's a small price to pay for the long-term benefits. Preventing engine failure and costly repairs can save you thousands of dollars over the life of your vehicle, not to mention the peace of mind that comes with knowing your BMW is built for reliability. Included in the kit:

8 - Turner Motorsport WPC-Treated "Race Series" Rod Bearing Shells 1 - Oil Pan Gasket 1 - Oil Filter Kit 1 - Oil Drain Plug 8 - Genuine BMW Connecting Rod Bolts 1 - Liqui Moly 10w-40 Engine Oil - 5 Liters 1 - Liqui Moly 10w-40 Engine Oil - 1 Liters 1 - Assembly Lube - 4 oz

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Ina Rocker Arm - E28, E30, E34
We Price Match - Give Us A Call or Chat!
Ina - Corporate Logo
T#:557719
Part#: 11331271429
Back Ordered
$ 26.99 USD
Free Shipping on orders $49 and up
Broken rocker arms are a real concern. Replace your broken arm or preventatively replace all of them.