SKU: 86284754764

Supertech BMW Intake Valve | Black Nitrated | Single Groove | S42/M42/M50/S50/M52/S52/M54 (+1mm Over Std.)

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Description

Supertech BMW Intake Valve | Black Nitrated | Single Groove | S42/M42/M50/S50/M52/S52/M54 (+1mm Over Std.)Supertech Performance BMIVN 1031S BMW S42 M42 M50 S50 M52 S52 M54 Intake valve Supertech valves are 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. Supertech offers their valves in either chrome coating, used in


Supertech Performance BMIVN-1031S BMW S42 / M42 / M50 / S50 / M52 / S52 / M54 Intake valve

Supertech valves are 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. Supertech offers their valves in either chrome coating, used in high performance valves, or hardened black nitrided which is most popular in European and Japanese motors.

Specs:

  • Head Diameter - 34.00mm (+1.0mm over STD)
  • Length - 106.1mm
  • Material - Black Nitrated
  • Stem Diameter - 5.97mm
  • Single Groove


Supertech High Performance Race Engine Valves features:

  • The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum)
  • Surface finish is smoother than with chromed stems, having less friction between stem and guide.
  • Valve seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other "explosive" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).
  • Higher rpm's engines take full advantage of all previous features. The higher the engine speed the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction.
  • The nitrided layer is adhered to the base material at a microscopic level, so does not"flake" or brake when the valves bend due to impacts with the pistons.
  • The Black Nitride applies to the whole valve while the chrome coating is only applied to the stem.

All Fitments

BMW
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1991 - 1995 318I ALL ALL 1.8 ALL M42 ALL 16Valve
1991 - 1995 318IS ALL ALL 1.8 ALL M42 ALL 16Valve
1995 - 1995 318TI ALL ALL 1.8 ALL M42 ALL 16Valve
2000 - 2000 323CI ALL ALL 2.5 ALL M52 ALL 24Valve
1998 - 2000 323I ALL ALL 2.5 ALL M52 ALL 24Valve
1998 - 1999 323IS ALL ALL 2.5 ALL M52 ALL 24Valve
2001 - 2006 325CI ALL ALL 2.5 ALL M54 ALL 16Valve
1992 - 1995 325I ALL ALL 2.5 ALL M50
M50TU 		ALL 16Valve
2001 - 2005 325I ALL ALL 2.5 ALL M54 ALL 16Valve
1992 - 1995 325IS ALL ALL 2.5 ALL M50
M50TU 		ALL 16Valve
2001 - 2005 325XI ALL ALL 2.5 ALL M54 ALL 16Valve
2000 - 2000 328CI ALL ALL 2.8 ALL M52 ALL 24Valve
1996 - 2000 328I ALL ALL 2.8 ALL M52 ALL 24Valve
1996 - 1999 328IS ALL ALL 2.8 ALL M52 ALL 24Valve
2001 - 2006 330CI ALL ALL 3.0 ALL M54 ALL 24Valve
2001 - 2005 330I ALL ALL 3.0 ALL M54 ALL 24Valve
2001 - 2005 330XI ALL ALL 3.0 ALL M54 ALL 24Valve
1991 - 1995 525I ALL ALL 2.5 ALL M50 ALL 16Valve
2001 - 2005 525I ALL ALL 2.5 ALL M54 ALL 16Valve
1993 - 1993 525IT ALL ALL 2.5 ALL M50 ALL 16Valve
1997 - 2000 528I ALL ALL 2.8 ALL M52
M52TU 		ALL 24Valve
2001 - 2005 530I ALL ALL 3.0 ALL M54 ALL 24Valve
1995 - 1995 M3 ALL ALL 3.0 ALL S50 ALL 24Valve
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 86284754764

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4.4 ★★★★★
Based on 12 reviews
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Product Reviews
R
Verified Purchase
Robert Heath
Alexandria, US
★★★★★ 5
The color and how well it looks
Color: GZ3255Z:Silver band&Blue dial
I have a lot of comments everywhere I go about the color, how smart the watch looks and I just love it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 25, 2025
T
Verified Purchase
The best watch OUPINKE
Pawtucket, US
★★★★★ 5
Sayed Sahil
Color: GZ3255Z:Two tone band&Blue dial, Color: GZ3255Z:Two tone band&Blue dial
OUPINKE watch is Comfortable and best quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 2, 2024
D
Dom Miliano
Belleville, US
★★★★★ 5
Classy fully automatic watch - lots of bling too
Watches with a mechanical movement are becoming more mainstream despite the impact of smart watches and quartz movement timepieces. With a pure mechanical watch, there are no concerns about battery charge so when you pick it up from the nightstand, all you would have to do is give the stem a twist to wind the main spring, reset the time and off you go - and that's only if it has stopped. If it hasn't stopped (it won't if you wear it every day or have a watch winder) you strap it on and you are all set. I gave this watch my regular accuracy test set against a clock linked to the atomic time source. To my great surprise, it was as accurate as one of my much more expensive mechanical watches (how much more expensive? This watch costs about the same as the sales tax on the most pricy watch in the closet !!) I use the included watch bracelet tool to remove a link from the watch to get a proper fit. Including the tool in the box saves you the $10 plus fee a jeweler might charge you to make the adjustment - very cool. And you probably will need to remove at least one link - some may need to remove two - since the bracelet has a generous size. Speaking of the bracelet, it's beautiful. I wore the watch today to church and a friend said it had "heavy duty bling" ... But she did say she thought it was beautiful and I concur. Finally, The way the bracelet clasp works is reminiscent of a Longines bracelet i have and that spells quality to me. The dial is black with chrome shiny minute markers so visibility in good light is excellent. I do not detect any glow in the dark markings on the hands or the minute markers - factor that in for your purchase decision. I see this watch as serving as your "good" watch for business wear, to don for a meal at a fancy restaurant or for that big date night. I think it has a classic look that (despite the bling of the bracelet) is conservative enough for anyone and any business situation.The only place I wouldn't wear it is to the beach or the gym despite the fact that it has claimed that it is waterproof to depths you probably will never experience. Accurate, beautiful, real quality that translates to good value and capable of being almost anyone's "good" watch. Recommended
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 1, 2021
J
Verified Purchase
JR
Draper, US
★★★★★ 5
Watch is not thin and is difficult to wear with long sleeve button downs
Color: Grey on Stainless Steel, Color: Grey on Stainless Steel
Great watch with distinctive style! Prefer the casual look with the accompanying rubber straps.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2026
J
Verified Purchase
JR
Battle Creek, US
★★★★★ 5
Watch is not thin and is difficult to wear with long sleeve button downs
Color: Grey on Stainless Steel, Color: Grey on Stainless Steel
Great watch with distinctive style! Prefer the casual look with the accompanying rubber straps.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2026

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