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PPE suggests that the exhaust valve seats be replaced with higher interference (+0
Use PPE part number (124060300) for 2003-2005 Cooler - connectors with Purple Clips
Thicker threaded plate with 49 percent larger oil passages
low mainline pressure
2020 2022 7
2019+ Silverado/Sierra 1500 w/ 8L90 Transmission Fluid Thermal Bypass Valve PPE Diesel - 125070000 2003-gmc-sierra-2500-hd-esi4743708 PPE suggests that the exhaustTransmission 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
