Plugs fit 1/8”, 3/16”, 1/4”, 5/16”, 3/8” and 1/2” hoses. Tapered caps close tubes from 1/8” to 1/2”. Use during tune-ups, vacuum tests and more. Shipping Weight 0.05 lb.

For all 1979 and up GM with carburetors. Flex shaft tool makes reaching and adjusting idle mixture screws easy. One end fits “Double-D” screws and the other 4.5 mm hex heads. Two tools in one. Shipping Weight 0.10 lb.

Fit Varajet, Dualjet and Quadrajet carbs with 2mm, 7mm, 10mm Double-D and 2.5mm hex fittings. Adjusts or removes (TPS), Idle Air Bleed, Mixture Control Solenoid and main jets. For 7/16” and 1/2” sockets. Shipping Weight 0.15 lb.

Sockets fit all 1979 and up GM and 1981 and up Ford with carburetors. Fit GM “Double-D”, GM 4.5mm Hex and Ford 3/32” Hex Adjusting Screws. Snaps on to 1/4” drive, fixed or flexible drivers. Shipping Weight 0.10 lb.

Aids in diagnosing clogged or restricted exhaust systems. Allows comparing backpressure readings ahead and behind of suspected restriction. Ideal for diagnosing clogged catalytic converters, collapsed exhaust pipes, etc. Kit includes small hole punch for use with air hammer, 5/16” X 1/2” self-tapping bolt and test adapter. Use self tapping bolts to plug hole after test is completed. (Note: Do not install directly into catalytic converter or muffler.) Gauge not included. Use 0 to 15 pound pressure gauge. Shipping Weight 0.55 lb.

Take readings while road testing vehicle. Compare pressure ahead and behind suspected restriction, like a catalytic converter or muffler. Includes punch, 5/16”x1/2” self-tapping bolts, test adapter, 12/18mm fitting for oxygen sensor port, 8-ft. of heat resistant silicone tipped hose and 0-15 psi gauge.