Fire ring en0043z

EN0043Z is a single reproduction AC #43 “Fire Ring” spark plug for the restoration of classic General Motors vehicles. The plug recreates period AC markings and green rings used on many factory-installed plugs during the 1960s and 1970s.

Application / fitment

The product is primarily intended for appearance-correct restoration. AC #43 was used in numerous classic GM engines, but technical fitment must be confirmed from the vehicle service manual by thread, seat, reach and specified heat range.

• selected classic Chevrolet Camaro, Corvette, Chevelle and Nova applications
• selected Pontiac GTO, LeMans, Tempest, Firebird and Trans Am
• selected Oldsmobile Cutlass, 442 and F85 applications
• other vehicles specifically calling for the historical AC #43 plug

Do not select solely by appearance or the number “43”. AC plug families use additional letters such as R, S and T that change resistance, projection, seat and reach.

Technical information

• type: reproduction restoration spark plug
• historical designation: AC #43
• marking style: Fire Ring / green rings
• reproduction part number: EN0043Z
• intended application: engines specifically calling for AC #43
• sales unit in this offer: 1 spark plug
• EN0043Z may appear in catalogues as a bulk-pack number, but this store sells the plugs individually

Compare the plug with the correct factory number, set electrode gap to the engine specification and tighten to the specified torque. Reproduction markings do not replace technical verification.