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Your cart is empty.Line Pressure Booster Kit
- 4L60-E, 4L65-E, 4L70-E
- Fits Late-Style Pump
- Valve
- Sleeve
- Pressure Regulator Spring
- O-Rings (2)
- Late-style pump
Line pressure booster kit 4L60E-LB2 fits late-style GM 4L60-E, 4L65-E and 4L70-E pumps. Sonnax hydraulic line pressure booster kits contain stronger pressure regulator springs and large ratio boost valves designed to work together to provide progressive pressure increases as driving conditions become more demanding.
Our pressure regulator springs are approximately 10 stronger than OE and more conservative in impact than other aftermarket kit springs. Large ratio boost valves provide higher pressure incrementally and when it is needed the most. The combination of these springs and valves in a Sonnax kit gives you the best of both worlds: a modest pressure increase at the low end, with a high-end pressure that is equal to or greater than that of other aftermarket kit springs.
- Achieve shorter shifts and increased torque capacity without creating low-speed harshness
- Improved band and clutch holding capacity for increased durability
- Progressive pressure increase as driving conditions become more demanding
- All the benefits of increased line pressure without overloading the pump at idle
- Simple and affordable drop-in solution with no special tools or reaming required
NOTE: Fits late-style pump with short 1.810" sleeve only. Use 4L60E-LB1 for early pumps with long 1.907" sleeve.
Bultron Nicolai
Reviewed in the United States on February 25, 2020
96 GMC Yukon kept slipping replaced some very normal parts that wore out over the better part of 30 years and now right as rain!
Brandon
Reviewed in the United States on October 9, 2018
Was as advertised. Ordered the same part for the same vehicle on Rockauto first. Rockauto sent me the incorrect sized part, for older model and it wouldn't fit.
Customer
Reviewed in the United States on October 29, 2018
Great product great price
Customer
Reviewed in the United States on September 19, 2017
did the trick
Krystle Hamilton
Reviewed in the United States on February 16, 2016
Good
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