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Jeep Wrangler JK LS swap (2007–2018)

Swap kits verifiedJK1 sourced swap recipe

LS Gen III/IV swap — advanced

Jeep Wrangler JK LS swap with GenRight engine and 4L80 transmission mounts (for GenRight JK Elite suspension builds).

Recommended engine: Gen III/IV LS with a 4L80 automatic (GenRight mount kit) — compare LS engines & donors

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PartWhatPrice
MountsGenRight Off Road JK Elite LS Engine and 4L80 Transmission Mounts
Made for the GenRight JK Elite suspension system; weld-in		$799.99
GenRight Off Road, 2026-09-28		Required
Watch out for: GenRight: requires cutting the factory mounts, grinding and welding; mounts shift the engine toward the passenger side to clear the upper front link and axle at full bump; the kit is made for use with the complete GenRight JK Elite suspension; its optional LS headers are not California smog legal.

Required parts we've priced so far: $799.99 (parts only, not a full budget — engine, trans, wiring and labor are extra. Try the swap cost estimator.)

Swap kit evidence

Every LS swap also needs

An oil pan that clears

Compare GM LS pans by sump position and depth.

Accessory drive spacing

F-body, car, truck and Corvette offsets.

Fuel system sizing

Injector and pump sizing for your power goal.

A transmission

4L60E to 8HP70 behind an LS.

Sources
  1. JK Elite LS Engine and 4L80 Transmission Mounts — GenRight Off Road