Everything about this plug's design is Heavy Duty....and even has a Racing Flag!

Up for Immediate Purchase is this Qty. 1 AC 436XL Spark Plug that were especially made for GM sponsorship NASCAR engines. These were never OEM, nor over the counter. For engines with Aluminum Heads! Being sold as a Collector Plug!

The above Photos show the exact plug, box, and gasket the buyer will receive. 

SHIPPING: ONLY to all 50 states of the USA....NO where else!

Payments we accept: PayPal Only