Innovative K Swap Passenger Bracket EK Civic EG Subframe

Innovative K Swap Passenger Bracket EK Civic EG Subframe

If you pulled the factory subframe out of your 96-00 Civic and bolted in a 92-95 EG piece to fix the axle angles, your K swap needs a different set of brackets than the guy across the pit lane running his EK subframe. This is the passenger side one. The Innovative Mounts 90021-SB is the right hand engine block bracket for a 1996-2000 Civic EK/EJ that has been converted to an EG subframe, and it will not line up on a car still wearing its stock crossmember.

What It Is and Why It Works

The EG subframe sits roughly two inches farther back in the chassis than the EK piece, and the engine goes back with it. That shift is why Innovative Mounts builds the 96-00 K-swap bracket set twice. The stock subframe cars get 90010-SB, 90020-SB and 90030-SB. The EG subframe cars get 90011-SB, this 90021-SB, and 90031-SB. Same chassis, same K series, different geometry.

The 90021-SB is fabricated steel, stress analyzed, and it bolts to the passenger side of the block to carry the engine mount. Innovative includes the hardware. It works with the full K-series family, K20A2 and K20A3 from an RSX, K20Z1 and K20Z3 from a Type-S or 8th gen Si, and the K24A1, K24A2, K24A4 and K24A8 blocks, and it works whether the EK started life as a manual or an automatic since the swap converts you to a manual either way.

One detail that pays off later: Innovative drills the passenger side bracket with two sets of mounting holes. Using the rear set pushes the motor farther back in the bay, which is what you want for intake and turbo manifold clearance on a K24. Take a minute with a tape measure before you torque anything, because the position you pick changes what fits under the hood for the rest of the build.

Specs

Fitment

Every row above assumes the car has already been converted to a 1992-1995 Civic EG subframe. Innovative and its authorized dealers both list this part with a hard "92-95 Civic subframe required" note. If your EK still has its factory subframe, this bracket is the wrong part number.

What to Know Before You Buy

The subframe question decides everything, and it is the reason people end up with the wrong bracket. Go look at the car. If you never swapped the crossmember, order 90020-SB instead. If you did the EG conversion, this is your passenger side piece and you also want 90011-SB for the driver side and 90031-SB for the rear. Buying one bracket at a time works, but Innovative sells the EG subframe bracket set as B90051-SB and the complete EG subframe mount kit as 90051 or B90051, which is the shorter path.

This is a bracket. The polyurethane mount that bolts into it is a separate part number, and that catches people who assume "sub bracket" means the whole assembly. Read the cart before you check out.

If you are dropping in a K24 rather than a K20, add the CR-V passenger side post mount bracket to the list. The K24 block does not take the K20 passenger mount directly, and that is a five minute realization that turns into a two week wait if you find it out with the engine hanging from a hoist. Also plan on longer subframe hardware than what came out of the car, and expect to work without printed instructions, because Innovative does not include any.

Last honest point. Innovative deletes the fluid damping Honda used in the factory mounts. That is what kills wheel hop and keeps the motor from flopping under load, and it is also why the car will be louder and buzzier at idle than stock. Nobody K-swaps an EK for a quiet commute, but know what you are signing up for. And once a bracket or mount is torqued down it carries bolt impressions and cannot be returned, so confirm the subframe first.