GM 6T30 6T40 Gen3 Transmission Lube Boost Tool Kit TransGo (6T40G3-LB-TKC)
Delivery time
You will receive your package in 2–5 business days within the contiguous U.S.
Delivery time
You will receive your package in 2–5 business days within the contiguous U.S.
Brand: TransGo
Type: Tool Set
Interchange Part Number: T46165AC,T-6T40G3-LB-TKC
Items Included: Reamer Tool, 2 Guides
Manufacturer Part Number: 6T40G3-LB-TKC
Material: Steel
Country/Region of Manufacture: United States
Universal Fitment: Yes
Vintage Part: No
Performance Part: Yes
At the start of production for the 2015 model year, General Motors upgraded the 6T40 series of transmissions to GEN3 with an off-axis chain driven pump incorporating a lube boost valve.
This lube boost valve is very active and exhibits extreme low mileage wear (up to .060”). To salvage the pump, TransGo engineered an oversize hardened steel valve and spring combination to minimize the valve oscillation responsible for premature bore wear, ensuring a lasting fix.
Use the guide that fits your casting the tightest without forcing it. Use WD-40® and low speed on your favorite portable drill and let the carbide reamer do the cutting until it bottoms in the bore.
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