Correct AC Fuel Pump 40658

[Jeff P.]

I've searched for past posts and found them all interesting. I came across a NOS # 40658 . It is a type that has screws on the bottom with a metal tab that had the number on it. All others are the pressed on type. When did the pressed on start. My car is a March 68 build. Thanks jeff

[Joe L.]

Re: Correct AC Fuel Pump 40658

I've searched for past posts and found them all interesting. I came across a NOS # 40658 . It is a type that has screws on the bottom with a metal tab that had the number on it. All others are the pressed on type. When did the pressed on start. My car is a March 68 build. Thanks jeff

Jeff------


If you came across an AC type 40658 that had any screws on it, then you came across a fuel pump that was incorrectly stamped or incorrectly boxed. I know of NO AC type 40658 that ever had any screws used in any part of its construction, external or internal.

[David L.]

Re: Correct AC Fuel Pump 40658

In January 1994 I bought 4 NOS AC fuel pumps (for $5 each but not in boxes) stamped "DI 40658" on the flange ("DI" = April 1969) at the Corvette swap meet in Cypress Gardens, FL. The person that I bought them from had no idea of their application because he did not have any Chevrolet parts catalogs. They are the non-rebuildable type without the screws.

AC # 40658 = GM # 6417337, correct for 1968 Corvette (327) and 1969 Corvette (350) models.

GM # 6417337 was discontinued in August 1971 and replaced with GM # 6470110 (AC # 40709).

Jeff,

I assume that your NOS 40658 pump is an aftermarket pump without the "AC" casting.

Dave

[Jeff P.]

Re: Correct AC Fuel Pump 40658

Thank you Joe and Dave. I came across one on eBay as I described. I'm going to spring Carlisle , maybe I'll get lucky. Jeff