Polyurethane For GM LS Swap Transmission Mount Kit Fit 4.8 5.3 6.0 4l60e 4l80e

Polyurethane Transmission Mount Kit for GM LS Swap

This polyurethane transmission mount kit is built for GM LS swap builds running the 4L60E or 4L80E automatic transmission, delivering firmer driveline control than worn rubber mounts.

Overview

This polyurethane transmission mount kit suits GM LS swap projects pairing a 4.8, 5.3, or 6.0 engine with a 4L60E or 4L80E transmission. The kit holds the transmission firmly in place under torque so the driveline stays aligned. It is aimed at builders, fabricators, and weekend wrenchers completing an LS swap.

Built For Performance

• Polyurethane construction resists compression better than standard rubber
• Fits 4L60E and 4L80E automatic transmissions in LS swap applications
• Works with 4.8, 5.3, and 6.0 liter LS engines
• Reduces driveline flex under hard acceleration
• Kit form simplifies installation during a swap build

Fits These Machines

• for GM LS 4.8L engine swaps
• for GM LS 5.3L engine swaps
• for GM LS 6.0L engine swaps
• for 4L60E transmission setups
• for 4L80E transmission setups

On-The-Job Use

• Engine swap projects in classic cars and trucks
• Restomod driveline builds
• Track and street performance applications
• Replacing worn factory transmission mounts

Specs At A Glance

Good To Know

Q: Will this fit my LS swap with a 4L80E? A: Yes, the kit is designed for 4L60E and 4L80E transmissions in LS swap builds. Confirm your transmission crossmember layout before ordering.

Q: Is polyurethane stiffer than rubber? A: Yes, polyurethane holds firmer under load than rubber mounts. Expect slightly more vibration transfer to the chassis compared to stock rubber.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.