Anti-Reversion Plates

Increase airflow by extending carburetor bore. Gasketed plates isolate vibration and help prevent fuel cavitation.

MP 5007

MagnaFuel’s custom-machined Anti-Reversion Plates (shear plates) keep your carburetor flowing at or beyond its CFM rating by reducing intake reversion at high RPM. These plates help prevent airflow reversion by redirecting the hot gasses that can rise into the intake manifold as the intake valve opens and the exhaust valve is still closing. These re-directed gasses can then help release and atomise fuel droplets that sometimes stick and drip down the carburetor bores.

If you run aggressive cam overlap, without MagnaFuel’s Anti-Reversion Plate, these hot gasses disrupt the cool intake charge, reducing flow, dampening the carburetor booster signal and creating unwanted turbulence.

MP 5007Standard Spacer

MP 5009Deluxe Spacer


Part Number Bore Size Description
MP-5005 1-11/16" 4150/4160 Holley w/rubber gaskets
MP-5006 1-3/4" 4150/4160 Holley w/ rubber gaskets
MP-5007-00 2.000" ProRev Plate w/ two O-rings
MP-5007-01 2.030" ProRev Plate w/ two O-rings
MP-5007-02 2.060" ProRev Plate w/ two O-rings
MP-5007-03 2.090" ProRev Plate w/ two O-rings
MP-5007-04 2.120" ProRev Plate w/ two O-rings
MP-5008-00 2.000" ProRev Plate 4500 Dominator
MP-5008-01 2.030" ProRev Plate 4500 Dominator
MP-5008-02 2.060" ProRev Plate 4500 Dominator
MP-5008-03 2.090" ProRev Plate 4500 Dominator
MP-5008-04 2.120" ProRev Plate 4500 Dominator
MP-5009-01 2.015" Split Dominator Set of 4
MP-5009-02 2.115 Split Dominator Set of 4
MP-5009-03 2.215" Split Dominator Set of 4
MP-5010-00 2.000" Dominator with rubber gaskets
MP-5010-01 2.030" Dominator with rubber gaskets
MP-5010-02 2.060" Dominator with rubber gaskets
MP-5010-03 2.090" Dominator with rubber gaskets
MP-5010-04 2.120" Dominator with rubber gaskets

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