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Home » Public Forums » GMCnet » size or part # for exhaust donut on a 403 (manifold to downpipe)
size or part # for exhaust donut on a 403 [message #363306] Wed, 07 April 2021 11:09 Go to previous message
boybach is currently offline  boybach   
Messages: 566
Registered: December 2020
Location: Vancouver Island
Karma:
Senior Member
Most of the parts places around here are very familiar with the 455 but when you ask about the 403 they get all puzzled looking and ask "what's that?" and "are you sure it ain't a 455? etc?" so to save those poor parts persons delving through reams of catalogs, anyone know the size or # offhand?

Larry


Larry - Victoria BC - 1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
 
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