Supertech Intake & Exhaust Valves

Supertech Single Groove Intake Valve - Priced Each

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T#:14783497

Part#: BMIVN-1055S

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$ 25.99 USD

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Head Diam: 32mm (std) Material: Stainless Steel 21-4N Groove Type: Single Groove Length: 104.9mm Stem Diam: 4.97mm

Intake Valve - Black Nitride

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T#:21505752

Part#: BMIVN-1054S

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$ 25.99

This product was last offered at the strikethrough price on
06-08-2026

$ 23.99 USD

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$ 25.99

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06-08-2026

$ 23.99 USD

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Head Diam: 31.40mm (std) Material: Stainless Steel 21-4N Groove Type: Single Groove Length: 106.7mm Stem Diam: 4.96mm

SuperTech Black Nitrided Exhaust Valve - +1mm Oversize - Single Valv...

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T#:640986

Part#: BMEVN-1031S

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$ 23.99 USD

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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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Performance Conical Valve Spring - Sold Each

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T#:21604306

Part#: SPR-FE20BE-2

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$ 20.99 USD

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Supertech has the high performance valvetrain components you need to take your build to the next level. Seat Pressure: 84 @ 37 Open Pressure: 157 @ 10 Max Lift: 12.2mm Coil Bind: 23.20mm OutSpr.ID: 17.60mm InnSpr.OD: 21.00mm InnSpr.ID: 14.20mm Rate: 7.25

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Performance Conical Valve Spring - Sold Each

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T#:21472894

Part#: SPR-FE20BE

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$ 19.99

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

$ 18.99 USD

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$ 19.99

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

$ 18.99 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 Upgraded Valve Stem Seal Kit - BMW E36 M42 1.8L (09/1992+) ...

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For vehicles with a production date from 09/1992+

T#:641029

Part#: VS-VBM6-M42KT

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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 Titanium Valve Retainers - Intake - Sold Each

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T#:21604319

Part#: RET-BMN54-TI

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$ 16.99 USD

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7 Degree - 5mm valve stem - Single or Tripe Groove Valves

Supertech Titanium Valve Retainers - Exhaust - Sold Each

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T#:21604320

Part#: RET-BMN54-TE

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$ 16.99 USD

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7 Degree - 6mm valve stem - Single or Tripe Groove Valves

Valve Stem Seal Intake Side - Set Of 8 - BMW MINI B38 B46/48 ...

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T#:14783496

Part#: VSI-BM50-IKT

Ships in 6 Business Days

$ 91.99

This product was last offered at the strikethrough price on
01-14-2026

$ 14.99 USD

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Supertech Valve Seals are the final piece of the puzzle for your performance valvetrain. This is for a complete valve stem seal repair for the Intake side, you will need 8 of a different part for the exhaust side.

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VW-Audi 7mm Exhaust Valve stem seal / Viton (SET OF 12)

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T#:35795472

Part#: VS-VW7E-12

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$ 13.99 USD

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VW-Audi 7mm Exhaust Valve stem seal / Viton (SET OF 10)

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T#:35795473

Part#: VS-VW7E-10

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$ 12.99 USD

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VW-Audi 7mm Exhaust Valve stem seal / Viton (SET OF 8)

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T#:35795474

Part#: VS-VW7E-8

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$ 9.99 USD

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$ 9.99 USD

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VW-Audi 7mm Exhaust Valve stem seal / Viton (SET OF 6)

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T#:35795475

Part#: VS-VW7E-6

Ships in 5 Business Days

$ 7.99 USD

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5mm Single Groove Valve Keeper - Priced Each

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T#:21604312

Part#: KPR-5.0-7S

Back Ordered

$ 3.99 USD

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Two required per valve, necessary use with certain supertech valves 5.0mm single groove

Single Groove Valve Keeper 6mm - Priced Each

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T#:3268708

Part#: KPR-6S-7

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$ 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

Valve keeper for Audi/BMW/Opel 6mm stem Triple groove - Supertech ...

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T#:26704985

Part#: KPR-VW6-T

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$ 1.99 USD

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$ 1.99 USD

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Supertech 6mm Exhaust Valve Stem Seal - Viton - BMW S54 S52 S50 M54 M...

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T#:641010

Part#: VS-VBM6E

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$ 1.99 USD

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$ 1.99 USD

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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 6mm Intake Valve Stem Seal - Polyacrylic - BMW S54 S52 S50 ...

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T#:641011

Part#: VS-VBM6I

In Stock

$ 1.99 USD

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$ 1.99 USD

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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 7mm Intake Valve Stem Seal - Polyacrylic - BMW S14 S38 ...

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T#:641013

Part#: VS-VW7I

Ships in 4 Business Days

$ 0.99 USD

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$ 0.99 USD

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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 Intake & Exhaust Valves

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Supertech Single Groove Intake Valve - Priced Each

Intake Valve - Black Nitride

SuperTech Black Nitrided Exhaust Valve - +1mm Oversize - Single Valv...

Performance Conical Valve Spring - Sold Each

Performance Conical Valve Spring - Sold Each

Supertech Upgraded Valve Stem Seal Kit - BMW E36 M42 1.8L (09/1992+) ...

Supertech Titanium Valve Retainers - Intake - Sold Each

Supertech Titanium Valve Retainers - Exhaust - Sold Each

Valve Stem Seal Intake Side - Set Of 8 - BMW MINI B38 B46/48 ...

VW-Audi 7mm Exhaust Valve stem seal / Viton (SET OF 12)

VW-Audi 7mm Exhaust Valve stem seal / Viton (SET OF 10)

VW-Audi 7mm Exhaust Valve stem seal / Viton (SET OF 8)

VW-Audi 7mm Exhaust Valve stem seal / Viton (SET OF 6)

5mm Single Groove Valve Keeper - Priced Each

Single Groove Valve Keeper 6mm - Priced Each

Valve keeper for Audi/BMW/Opel 6mm stem Triple groove - Supertech ...

Supertech 6mm Exhaust Valve Stem Seal - Viton - BMW S54 S52 S50 M54 M...

Supertech 6mm Intake Valve Stem Seal - Polyacrylic - BMW S54 S52 S50 ...

Supertech 7mm Intake Valve Stem Seal - Polyacrylic - BMW S14 S38 ...

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