2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8
2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8
2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8
2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8
2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8
2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8
2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8
2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8
2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8
2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8
2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8
2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8

2015-2018 SILVERADO/SIERRA 1500 W/ 8L90 TRANSMISSION AND 3/8" LINE - TRANSMISSION FLUID THERMAL BYPASS VALVE

$89.99 In Stock Temporarily Out of Stock
45478419038451
PART NUMBER: 125071000 GTIN: 840171223149

Features:

  • Maximizes fluid flow to and from the transmission cooler
  • Billet aluminum construction
  • Direct fit with OEM 8L90 8-speed transmission and fluid lines
  • Service plug with Neodymium magnet and O-ring seal

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1 YEAR LIMITED WARRANTY

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  • Description
  • Compatible Vehicles
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Transmission Fluid Thermal Bypass Valve

Add another measure of protection and increase fluid flow to the transmission cooler. Increase cooling capacity with this easy-to-install billet aluminum PPE Transmission Fluid Thermal Bypass Valve for the GM 8L90 8-speed transmission.

The OEM part has restrictive internal passages. When the OEM valve fails in the closed position, transmission fluid doesn’t reach your cooler. This can be caused by mechanical failure or debris. The result of stock valve failure can cause the transmission to dangerously overheat. Without properly cooled transmission fluid, the demands of towing and rigorous stop-and-go driving conditions shorten the life of transmission components. The PPE Bypass Valve eliminates the extremely restrictive mechanical factory valve, maximizing fluid flow to and from the transmission cooler.

Transmission Fluid Thermal Bypass Valve

For further protection, a Neodymium magnet-equipped service plug with an O-ring seal has been added. The removable plug traps ferrous debris and can be accessed to remove particles from the system. The factory bypass valve does not have this feature.

Customer Reviews

Based on 34 reviews
97%
(33)
3%
(1)
0%
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0%
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0%
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E
Ed M.
Great product and great easy fit

Purchased after a recommendation from my mechanic. My 2017 Yukon Denali has 189,000 miles and was having a few issues with the transmission. After finding that the factory transmission thermostat was stuck he suggested the bypass valve by PPE. Arrived fast and got it installed in a few minutes. Very easy installation. I took my mechanic about 15 minutes to pull the old the old one and install the new part. Looks and feels very high quality. So far it’s working perfectly and the transmission temp is spot on. I’m trying to get another 100K out of my Yukon and PPE will help me achieve that goal.

J
John a.
Fits the 392 wrangler

I installed the PPE bypass part #225065300 on my 2022 392 wrangler. It worked great, my transmission temps went down considerably. I’m very happy with the product and highly recommend it. I also installing one on my charger scat pack.

O
Olivier L.f.T.
Huge gain on lower temperature

I got a 26 degres celsius lower temperature than stock . Easy to install . Took me 10 minutes a 10 mm wrench and a 13 mm wrench and socket . Thats all what you need . I already recommend it to people that i know

J
Julian L.
Big Change

2020 Chevy Silverado 1500 5.3 RST. Notice a huge difference in temps and transmission operations. I bought this because I wanted to prolong my transmission, and what better way to do that? So I ordered it, and it was shipped / delivered fast. I definitely will be ordering the big cooler next.

R
Rotorhead
Works as advertised!

This is a beautifully functioning improvement that gives one a piece of mind when it comes to avoiding a potential catastrophic transmission failure due to overheating. Quick installation and 30* drop in operational temperature. I highly recommended this upgrade.

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