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Datsun Roadster, set of four, smog plug inserts for 68 -70 1600 and 2000 cylinder heads
AFTERMARKET USA
These parts have been available for 3 decades from us. Two styles to choose from. New Beautiful Pioneer Broach Co. of 86 years, broached ends Allen Hex Head version comes with everything you see in the photos including 3/8" Hex Head Allen socket & W/ LOCKTITE (optional) NO RUSTY PARTS
These inserts were reverse engineered to screw into the ports in the head where the air injectors were installed as smog equipment. They have the exact thread and contour of the injectors and fill the entire cavity; both the threaded portion and the smooth bore. This completely eliminates that annoying “chirping” sound caused by engine exhaust passing over the tube, which creates a resonant chamber (like a badly played flute).
Once installed, you’ll be amazed at hearing only the smooth hum of the exhaust out the tailpipe. The clucking chicken in your engine will be dead and gone! Does not include clucking chicken. Comes with a full detailed instruction sheet.
NOTE 2nd PHOTO: The 1st part in the row is the original exhaust injector. It is in the photo group to show what is in your car that you will be removing and is for reference only.
Choke the chicken today!