Air Cleaner Assembly 1983-pontiac-firebird-esi2278290 multi-layer sound suppression materials inside

multi-layer sound suppression materials inside each of these mufflers to help control exhaust tone and drone

This means you won't feel a big increase in NVH

The SB042 attaches to your Mustang with fabricated end links and 88-durometer polyurethane bushings

Since most GL-5 gear oils for differentials are too slippery for manual transmissions

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Air Cleaner Assembly 1983-pontiac-firebird-esi2278290 multi-layer sound suppression materials insidethe unique Pro Charge strip will let you know when it's time to clean your filter. Use Edelbrock Pro Charge Cleaning Kit #43600 to clean and re oil. Includes installation accessories and an Edelbrock script "E" nut.