Boundary Shims

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IN STOCK BP-SH-K Boundary 89-05 Ford/Mazda BP (All Types) I4 Shim Kit (7/14/21/28/35 PSI) w/Retaining Pin $39.33 Details

IN STOCK VQ-SH-K Boundary Nissan VQ (All Types) VHR Shim Kit (10/20/30 PSI) - 3 Shims $48.68 Details

Looking to upgrade your vehicle with a oil pump from Boundary? We carry a great variety of Boundary Shims and other engine component performance parts for your vehicle.

We have 2 Boundary Shims available with free shipping to the Continental US 48 States.