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BMW Internal Engine Parts

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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Supertech - Corporate Logo
T#:641030
Part#: VS-VBM6-6CYLKT
In Stock
$ 27.99 USD
Free Shipping on orders $49 and up
Includes a full set of polyacrylic intake and viton exhaust valve stem seals! Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 8.8mm/.347" Seal OD: 12.2mm/.480"
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Glyco - Corporate Logo
T#:375825
Part#: 11241284849
Ships in 2 Business Days
$ 92.02

This product was last offered at the strikethrough price on
07-15-2026

$ 84.36 USD
Free Shipping on orders $49 and up
$ 84.36 USD
Free Shipping on orders $49 and up
Standard bore - 45mm
Cylinder Head Oil Check Valve
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:35863150
Part#: 11367541692
In Stock
$ 39.08

This product was last offered at the strikethrough price on
08-13-2026

$ 39.06 USD
Free Shipping on orders $49 and up
$ 39.06 USD
Free Shipping on orders $49 and up


Genuine BMW Non-Return Valve
This item fits the following BMW Chassis:
E82 1M Coupe,E70 X5 X5,E71 X6,E82,E83 X3,E85 Z4,E86 Z4,E89 Z4,E90,E92,E93,F01,F02,F10,F25 X3

Fits BMW Engines including:
N51,N52,N52N,N54,N54T

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Supertech - Corporate Logo
T#:640219
Part#: BMEVN-1030S
Ships in 9 Business Days
$ 29.99 USD
Free Shipping on orders $49 and up
Supertech valves are some of the best on the market, made from one piece of forged stainless steel for the ultimate in strength and durability. Supertech valves go through a special heat treatment process that obtains the right amount of harness for each engine to ensure the ultimate valve for your performance motor. These valves are hardened black nitrided, which is most popular in European and Japanese motors.
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Supertech - Corporate Logo
T#:302459
Part#: BMIVN-1030
Ships in 9 Business Days
$ 32.99 USD
Free Shipping on orders $49 and up
Supertech valves are some of the best on the market, made from one piece of forged stainless steel for the ultimate in strength and durability. Supertech valves go through a special heat treatment process that obtains the right amount of harness for each engine to ensure the ultimate valve for your performance motor. These valves are hardened black nitrided, which is most popular in European and Japanese motors.
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Glyco - Corporate Logo
T#:183
Part#: 11241310515
In Stock
$ 30.59

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

$ 27.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 30.59

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

$ 27.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
E30 M3, E28 M5, E24 M6, E34 M5 Rod Bearing. Sold individually. Standard sizing.

This item fits the following BMWs
1988-1991 BMW E30 M3 - 8 required.
1988 BMW E28 M5 - 12 required.
1989-1993 BMW E34 M5 3.6 liter - 12 required.
1987-1989 BMW E24 M6 - 12 required.
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Supertech - Corporate Logo
T#:594815
Part#: GNH7700
Back Ordered
$ 27.99 USD
Free Shipping on orders $49 and up

Enhance the performance of your MINI N14 or N18 engine with the MINI N14 N18 77.00mm Piston Ring Kit GNH7700. This high-quality piston ring kit is designed to provide optimal sealing and durability for your engine, ensuring smooth operation and reliable performance.

  • Specifically designed for MINI N14 and N18 engines
  • Features a diameter of 77.00mm for precise fitment
  • Ensures optimal sealing to prevent oil leakage and maintain compression
  • Durable construction for long-lasting performance and reliability
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Supertech - Corporate Logo
T#:21472889
Part#: BMEVI-1055S-HS
Ships in 5 Business Days
$ 55.99 USD
Free Shipping on orders $49 and up
Single Groove sodium filled exhaust valves for high performance builds Head Diam: 28mm (std) Material: Inconel-Nimonic / Sodium Filled Groove Type: Single Groove Length: 112.9mm Stem Diam: 5.96mm
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Supertech - Corporate Logo
T#:18302506
Part#: MCIVN-1200S
Ships on Sep 3, 2026
$ 30.99 USD
Free Shipping on orders $49 and up

Bavarian Autosport - Corporate Logo
T#:17871154
Part#: 11311432177
In Stock
Sale - Save 20% $ 27.99

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

$ 22.39 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 27.99

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

$ 22.39 USD
Free Shipping on orders $49 and up
Supertech - Corporate Logo
T#:26038568
Part#: SPRKH1000DBMST
In Stock
20% off MSRP $ 1,042.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 833.99 USD
Free Shipping on orders $49 and up
20% off MSRP
$ 1,042.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 833.99 USD
Free Shipping on orders $49 and up
Crafted from premium Superclean Chrome Silicon Vanadium Steel alloy, these valve springs offer exceptional performance and durability even at high RPMs. CAD engineering ensures that the wire stress levels remain within defined limits for long-lasting durability, even under extreme racing conditions. Advanced computer software allows Supertech to meticulously control harmonics, ensuring optimal performance. Manufactured with high-quality military-certified Steel, the retainers are CNC machined to provide a precise fit, guaranteeing longevity and reliability.
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Supertech - Corporate Logo
T#:21604313
Part#: KPR-6S-7-24
Ships in 7 Business Days
$ 51.99 USD
Free Shipping on orders $49 and up

BMW M42 M50 M52 M54 6mm Single Groove Valve Keeper is a precision-engineered component essential for securing valves in BMW engines. Turner Motorsport offers this high-quality valve keeper, designed to fit specific Supertech valves for enhanced performance and reliability.

  • Precision Fit: Designed specifically for BMW M42, M50, M52, and M54 engines, ensuring a perfect fit with 6.0mm single groove valves.
  • High-Quality Construction: Made from durable materials to withstand high-pressure conditions and provide long-lasting performance.
  • Enhanced Valve Security: Two keepers are required per valve to securely hold the valve in place, preventing movement and ensuring consistent engine performance.
  • Compatibility: Ideal for use with certain Supertech valves, providing a reliable solution for engine builds and upgrades.
  • Easy Installation: Simple to install with standard tools, offering a hassle-free upgrade or replacement option.
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Supertech - Corporate Logo
T#:23284068
Part#: GNH7750
Ships on Sep 9, 2026
$ 23.99 USD
Free Shipping on orders $49 and up

Experience top-tier performance with Supertech Piston Rings, meticulously crafted in Japan using advanced technology. Engineered for high-performance applications, these piston rings are specifically designed to optimize engine performance in BMW vehicles.

  • Manufactured in Japan with cutting-edge technology for superior quality
  • Specifically designed for high-performance applications
  • Ideal for ensuring peak engine performance in BMW vehicles
  • Four sets required for a complete engine overhaul
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Supertech - Corporate Logo
T#:21604314
Part#: KPR-5.0-7S-24
In Stock
$ 72.99

This product was last offered at the strikethrough price on
08-13-2026

$ 67.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 72.99

This product was last offered at the strikethrough price on
08-13-2026

$ 67.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Two required per valve, for use with certain supertech valves 5.0mm single groove

Supertech - Corporate Logo
T#:18302505
Part#: MCEVI-1200-HS
Ships in 7 Business Days
$ 67.99 USD
Free Shipping on orders $49 and up
Bavarian Autosport - Corporate Logo
T#:17871158
Part#: 11367583208
In Stock
Sale - Save 20% $ 199.99

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

$ 159.99 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 199.99

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

$ 159.99 USD
Free Shipping on orders $49 and up

Supertech - Corporate Logo
T#:640986
Part#: BMEVN-1031S
Ships in 9 Business Days
$ 23.99 USD
Free Shipping on orders $49 and up
Upgraded valves designed for high horsepower applications! Our valves are not finished from generic blanks rather they are specifically designed for each and every application. We work relentlessly, testing and researching every aspect trying to improve the air flow of our designs. With every valve design, we strive to maximize durability through higher fatigue resistance and tensile strength. Each valve tip is hardened beyond 52HRc. It’s unlikely you will find any of our competitor’s valves with stricter dimensional tolerances than our Supertech valves. Combine that with finished seats with equally strict run out tolerances and you won’t find a better sealing, better performing and easier to install solution anywhere! Optimum high flow rates are achieved by ensuring that our valves are manufactured with the best angles for each application. We consider back cut, under cut and valve head angles for each application to produce the optimum high flow rates for each application. In 2006 we introduced our stem Superfinishing as a standard addition to all of our valves at no additional cost. When our Superfinish is combined with our Black Nitrided valve, it reduces the surface roughness to 1/3 of our chrome coated valve. The end result… unsurpassed performance and durability. Our exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for greater strength at higher temperatures. Black Nitride Coating: This is a hardening treatment that has been steadily growing in popularity over the last several years. These black Nitride coated valves feature harder surfaces and smoother finishes, providing less friction and subsequently longer life. Please see below for more benefits of our Black Nitride valves. Head Diam: 31.50mm Material: Black Nitride Groove Type: Single Groove Length: 105.65mm Stem Diam: 5.95mm Size: 1mm+
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Supertech - Corporate Logo
T#:21604329
Part#: P6-BMN55-84-T-6
In Stock
$ 984.99

This product was last offered at the strikethrough price on
05-21-2026

$ 904.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 984.99

This product was last offered at the strikethrough price on
05-21-2026

$ 904.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
​Supertech forged pistons are a great choice for performance engine builds! Bore: 84.00mm Over Size: STD Comp Ratio: 10.2:1 Dome dish: -10.4 Head CCs: 37cc Comp Height: 32.40mm Stroke: 89.60mm Skirt style: Slipper Design Rod Length: 141.35mm Pin Diam: 22mm Material: 4032 Application: All Motor / Turbo Ring part number: R84-GNH8400 (MUST BE PURCHASED SEPARATELY)
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URO Cold Start Valve - BMW M30 Engines - 13641358917
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:37925949
Part#: 13641358917
Ships in 2 Business Days
$ 322.99 USD
Free Shipping on orders $49 and up

URO Cold Start Valve - BMW M30 Engines - 13641358917

URO Cold Start Valve - BMW M30 Engines - 13641358917 is designed to restore proper cold start functionality in BMW vehicles equipped with the M30 engine. This high-quality replacement valve ensures smoother engine starts, especially in cold weather, by controlling the flow of fuel during startup. Manufactured to OE specifications, it offers reliable performance and long-lasting durability. The URO Cold Start Valve is an essential component to maintain optimal engine operation and avoid potential cold-start issues.

Key Benefits:

  • Optimized Engine Start: Ensures smooth engine starts, especially in cold weather conditions.
  • OE Replacement: Manufactured to original equipment specifications for a perfect fit and reliable performance.
  • Improved Fuel Flow Control: Regulates fuel flow during startup to prevent hesitation and rough idling.
  • Durable Construction: Made with high-quality materials to withstand engine heat and harsh operating conditions.
  • Long-Term Reliability: Designed for durability, ensuring long-lasting function and protection against common cold-start issues.
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Supertech - Corporate Logo
T#:8549426
Part#: BMEVN-1030-12
In Stock at Vendor
$ 358.99 USD
Free Shipping on orders $49 and up
$ 358.99 USD
Free Shipping on orders $49 and up
Upgraded valves designed for high horsepower applications! Our valves are not finished from generic blanks rather they are specifically designed for each and every application. We work relentlessly, testing and researching every aspect trying to improve the air flow of our designs. With every valve design, we strive to maximize durability through higher fatigue resistance and tensile strength. Each valve tip is hardened beyond 52HRc. It’s unlikely you will find any of our competitor’s valves with stricter dimensional tolerances than our Supertech valves. Combine that with finished seats with equally strict run out tolerances and you won’t find a better sealing, better performing and easier to install solution anywhere! Optimum high flow rates are achieved by ensuring that our valves are manufactured with the best angles for each application. We consider back cut, under cut and valve head angles for each application to produce the optimum high flow rates for each application. In 2006 we introduced our stem Superfinishing as a standard addition to all of our valves at no additional cost. When our Superfinish is combined with our Black Nitrided valve, it reduces the surface roughness to 1/3 of our chrome coated valve. The end result… unsurpassed performance and durability. Our exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for greater strength at higher temperatures. Black Nitride Coating: This is a hardening treatment that has been steadily growing in popularity over the last several years. These black Nitride coated valves feature harder surfaces and smoother finishes, providing less friction and subsequently longer life. Please see below for more benefits of our Black Nitride valves. Black Nitride Coating Head Diam: 30.50mm Material: Black Nitride Groove Type: Triple Groove Length: 105.65mm Stem Diam: 5.95mm Size: Std
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Supertech - Corporate Logo
T#:8549424
Part#: KPR-VW6-T-24
In Stock at Vendor
$ 45.99 USD
Free Shipping on orders $49 and up
Upgraded valve locks from Supertech - features a triple groove for compatible intake and exhaust valves.
Supertech - Corporate Logo
T#:9126167
Part#: BMEVI-1030S-12
In Stock at Vendor
$ 562.99 USD
Free Shipping on orders $49 and up
The exhaust valves in your vehicle allow the exhaust port to be sealed during the combustion process, so that the engine can run at top efficiency. If the timing belt or lifter breaks, this can cause the piston to come in contact with the valve and bend or break it, causing an improper seal. This will cause a rough idle, misfires, and a check engine light condition. Be sure to replace your bent or broken valve today and keep your engine running strong.
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Glyco - Corporate Logo
T#:23748157
Part#: 112412848516CYL-
Ships in 2 Business Days
$ 331.13

This product was last offered at the strikethrough price on
07-15-2026

$ 305.57 USD
Free Shipping on orders $49 and up
$ 305.57 USD
Free Shipping on orders $49 and up
Supertech - Corporate Logo
T#:21604322
Part#: RET-BMN54-TI-12
Ships in 7 Business Days
$ 197.99 USD
Free Shipping on orders $49 and up
7 Degree - 5mm valve stem - Single or Tripe Groove Valves
Supertech - Corporate Logo
T#:14783498
Part#: BMIVN-1055S-12
Ships in 9 Business Days
$ 310.99 USD
Free Shipping on orders $49 and up
Head Diam: 32mm (std) Material: Stainless Steel 21-4N Groove Type: Single Groove Length: 104.9mm Stem Diam: 4.97mm

Supertech - Corporate Logo
T#:21604321
Part#: RET-BMN54-TE-12
Ships in 7 Business Days
$ 197.99 USD
Free Shipping on orders $49 and up
7 Degree - 6mm valve stem - Single or Tripe Groove Valves

Supertech - Corporate Logo
T#:11857222
Part#: BMEVN-1031S-12
In Stock at Vendor
$ 322.99 USD
Free Shipping on orders $49 and up
Upgraded valves designed for high horsepower applications! Our valves are not finished from generic blanks rather they are specifically designed for each and every application. We work relentlessly, testing and researching every aspect trying to improve the air flow of our designs. With every valve design, we strive to maximize durability through higher fatigue resistance and tensile strength. Each valve tip is hardened beyond 52HRc. It’s unlikely you will find any of our competitor’s valves with stricter dimensional tolerances than our Supertech valves. Combine that with finished seats with equally strict run out tolerances and you won’t find a better sealing, better performing and easier to install solution anywhere! Optimum high flow rates are achieved by ensuring that our valves are manufactured with the best angles for each application. We consider back cut, under cut and valve head angles for each application to produce the optimum high flow rates for each application. In 2006 we introduced our stem Superfinishing as a standard addition to all of our valves at no additional cost. When our Superfinish is combined with our Black Nitrided valve, it reduces the surface roughness to 1/3 of our chrome coated valve. The end result… unsurpassed performance and durability. Our exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for greater strength at higher temperatures. Black Nitride Coating: This is a hardening treatment that has been steadily growing in popularity over the last several years. These black Nitride coated valves feature harder surfaces and smoother finishes, providing less friction and subsequently longer life. Please see below for more benefits of our Black Nitride valves. Head Diam: 31.50mm Material: Black Nitride Groove Type: Single Groove Length: 105.65mm Stem Diam: 5.95mm Size: 1mm+
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Supertech - Corporate Logo
T#:22723731
Part#: P4MIN56N1877.5CR
In Stock
$ 649.00 USD
Free Shipping on orders $49 and up

Supertech Pistons are the pinnacle of high-performance engineering, designed to take your engine to the next level. Manufactured from an extruded high-silicone, enhanced 4032 alloy with added copper (Cu), nickel (Ni), and magnesium (Mg), these pistons boast low thermal expansion, exceptional wear resistance, and superior thermal conductivity. They are built to handle high levels of boost, up to 42psi, even when using alcohol fuel.

The manufacturing process involves a meticulous two or three-step forging process, resulting in a fine structural grain. Subsequent machining steps are executed with precision using state-of-the-art CNC machines. Multiple heat treatments impart high tensile strength and uniform hardness to the pistons.

Standard features of Supertech Pistons include contact reduction grooves and meticulously honed and reamed pin bores, ensuring a precise fit. The wrist pins are constructed from cold-extruded chrome moly steel, guaranteeing exceptional strength and are secured with wire clip locks.

To further enhance performance and longevity, these pistons receive a 'phosphate dry lubricant' coating. This coating not only safeguards the rings against 'micro-welding' but also improves lubrication in the skirt/cylinder area.

Supertech Pistons are designed to work with a .030" head gasket and .010" deck, with compression ratios calculated accordingly. Please note that rings are sold separately.

These pistons are compatible with N14 and N18 engines for the Cooper S, making them a perfect choice to unlock the true potential of your engine.

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Supertech - Corporate Logo
T#:14816646
Part#: BMEVI-1055S-HS-1
Ships in 5 Business Days
$ 660.99 USD
Free Shipping on orders $49 and up
Single Groove sodium filled exhaust valve set for high performance builds Head Diam: 28mm (std) Material: Inconel-Nimonic / Sodium Filled Groove Type: Single Groove Length: 112.9mm Stem Diam: 5.96mm
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Supertech - Corporate Logo
T#:641032
Part#: VS-VW7-S38KT
Ships in 9 Business Days
$ 177.99 USD
Free Shipping on orders $49 and up
Includes a full set of polyacrylic intake and viton exhaust valve stem seals! Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 9.8mm/.385" Seal OD: 13.2mm/.520"
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Supertech - Corporate Logo
T#:641031
Part#: VS-VW7-S14KT
Ships in 9 Business Days
$ 33.99 USD
Free Shipping on orders $49 and up
Includes a full set of polyacrylic intake and viton exhaust valve stem seals! Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 9.8mm/.385" Seal OD: 13.2mm/.520"
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Supertech - Corporate Logo
T#:22723741
Part#: CRMINR56H138.54-
Ships on Sep 4, 2026
$ 795.99 USD
Free Shipping on orders $49 and up

Explore our latest innovation – newly developed rods meticulously crafted to deliver exceptional performance. These rods are manufactured from a high tensile strength 4340 alloy, providing outstanding wear and fatigue resistance under optimal conditions. Their H-beam design, along with the inclusion of ARP 2000 bolts, capable of achieving a remarkable clamp load of 220,000 psi, ensures long-lasting durability.

What sets these rods apart is their in-house design, utilizing state-of-the-art CAD and FEA software to guarantee the highest quality in the market. With impressive performance ratings of 150hp per cylinder and a staggering 250hp per cylinder when paired with the ARP625+ bolt upgrade, these rods are your ultimate choice for enhancing your engine's power and reliability.

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Supertech - Corporate Logo
T#:21604309
Part#: SPRKFE20N54BE2
Ships in 6 Business Days
$ 965.99 USD
Free Shipping on orders $49 and up
Supertech has the high performance valvetrain components you need to take your build to the next level. ​​Can be used with factory valve stem seals and keepers. InnSpr.OD: 21mm InnSpr.ID: 14.2mm Seat Pressure: 88 @ 36.5 Open Pressure: 160 @ 10 Max Lift: 12mm Coil Bind: 23.2mm Rate: 7.25 Kit spring: SPR-FE20BE-2 Kit spring qty: 24 Retainer: RET-BMN54-TI (5mm) / RET-BMN54-TE (6mm) OutSpr.OD: 24.4mm OutSpr.ID: 17.6mm Retainer qty: 24
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Bavarian Autosport - Corporate Logo
T#:639826
Part#: 13627525015
Special Order: No Guaranteed ETA
$ 67.99 USD
Free Shipping on orders $49 and up
This crankshaft position sensor provides the ECU with the engine speed signal. It is mounted in either the engine block or the bell housing of the transmission on most cars. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
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Bavarian Autosport - Corporate Logo
T#:17871157
Part#: 11367524954
In Stock
Sale - Save 20% $ 5.99

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

$ 4.79 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 5.99

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

$ 4.79 USD
Free Shipping on orders $49 and up
Holds the camshaft gear to the camshaft, measures M10X1X94.

Supertech - Corporate Logo
T#:641010
Part#: VS-VBM6E
In Stock
$ 1.99 USD
Free Shipping on orders $49 and up
Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 8.8mm/.347" Seal OD: 12.2mm/.480"
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Supertech - Corporate Logo
T#:641011
Part#: VS-VBM6I
In Stock
$ 1.99 USD
Free Shipping on orders $49 and up
Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 8.8mm/.347" Seal OD: 12.2mm/.480"
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Supertech - Corporate Logo
T#:21505756
Part#: BMEVI-1054S-HS
In Stock
$ 55.99

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

$ 50.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 55.99

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

$ 50.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Head Diam: 28mm (std) Material: Inconel-Nimonic / Sodium Filled Groove Type: Single Groove Length: 114.9mm Stem Diam: 5.95mm

Supertech - Corporate Logo
T#:31191899
Part#: MCEVI-1400S-HS
In Stock
$ 56.99

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

$ 51.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 56.99

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

$ 51.99 USD
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Free Shipping on orders $49 and up

MINI F54 to F60 Supertech Exhaust Valve - Priced Each 28.5mm Standard Size offers a high-performance upgrade for MINI models. This exhaust valve is designed for enhanced durability and efficiency, featuring a standard head diameter of 28.5mm and a length of 100.10mm. It is constructed from black nitride material and filled with sodium to withstand high temperatures and extreme conditions.

  • High Durability: Made from black nitride and sodium-filled for improved resistance to heat and wear.
  • Precision Engineering: Standard head diameter of 28.5mm ensures a perfect fit and function.
  • Enhanced Performance: Designed to withstand high temperatures and provide reliable exhaust flow.
  • Compatibility: Uses factory retainers and springs for easy installation.
  • Quality Construction: Inconel material and single groove design enhance the valve’s longevity and performance.

This exhaust valve is ideal for those seeking to optimize engine performance and durability.

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JM Turbo Coopers - Corporate Logo
T#:31522922
Part#: JM-SVG
In Stock
$ 6.99 USD
Limited Qty Sale
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$ 6.99 USD
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Supertech - Corporate Logo
T#:21505753
Part#: BMIVN-1054S-1
In Stock
$ 25.99 USD
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Head Diam: 31.9mm (+0.5mm) Material: Stainless Steel 21-4N Groove Type: Single Groove Length: 106.7mm Stem Diam: 4.96mm

Supertech - Corporate Logo
T#:3268708
Part#: KPR-6S-7
In Stock
$ 5.99

This product was last offered at the strikethrough price on
03-04-2026

$ 2.99 USD
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$ 2.99 USD
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Two required per valve, for use with certain supertech valves 6.0mm single groove
Supertech - Corporate Logo
T#:21472894
Part#: SPR-FE20BE
In Stock
$ 19.99 USD
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Supertech has the high performance valvetrain components you need to take your build to the next level. Seat Pressure: 75 @ 37 Open Pressure: 155 @ 10 Max Lift: 12.2mm Coil Bind: 23.20mm Rate: 8 OutSpr.ID: 17.60mm InnSpr.OD: 21.00mm InnSpr.ID: 14.20mm
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Supertech - Corporate Logo
T#:21505757
Part#: BMEVI-1054S-HS-1
In Stock
$ 55.99

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

$ 50.99 USD
Limited Qty Sale
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$ 55.99

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

$ 50.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Head Diam: 28.50m (+0.5mm) Material: Inconel-Nimonic / Sodium Filled Groove Type: Single Groove Length: 114.9mm Stem Diam: 5.95mm


Supertech Upgraded Valve Stem Seal Kit - BMW E36 M42 1.8L (09/1992+) ...
For vehicles with a production date from 09/1992+
Supertech - Corporate Logo
T#:641029
Part#: VS-VBM6-M42KT
In Stock
$ 18.99 USD
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$ 18.99 USD
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Includes a full set of polyacrylic intake and viton exhaust valve stem seals! Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 8.8mm/.347" Seal OD: 12.2mm/.480"
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Supertech - Corporate Logo
T#:21505765
Part#: BMEVI1054SHS-1KT
In Stock
$ 660.99 USD
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Head Diam: 28.50m (+0.5mm) Material: Inconel-Nimonic / Sodium Filled Groove Type: Single Groove Length: 114.9mm Stem Diam: 5.95mm