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Thumbnail Filmstrip of RA-0240 SPARK PLUG TUBE BILLET/TWO-PIECE FOR 426 STOCK MOPAR HEADS & HEADS W/O ORINGS Images
Manton Spark Plug TubeS – Street 426 Hemi Head , Small Hole Stock Length 5.980 ANY HEAD THAT DOES NOT HAVE RINGS DOWN INSIDE HEAD BRAD 426 OTHERS NOT FOR FUEL HEADS
HEADS WITHOUT ORINGS IN HEAD
REQUIRES YOU TO PULL THE SPARK PLUGS OUT TO REMOVE THESE
These small diameter spark plug tubes are engineered to minimize Rocker Arm to tube contact effectively. They serve as direct replacements for your current tubes, featuring billet aluminum ends and a 4130 steel body. The robust steel construction ensures durability, capable of withstanding Rocker Arm rubbing without denting or wearing. With an outer diameter of 1.180 inches, these tubes provide an additional .040 inches of clearance.
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Note: To use these tubes, a minor modification to the spark plug boot is necessary for it to fit into the tube. You’ll need 8 tubes for a complete set (16 for a dual-plugged head).
