Highliner

I have a stock 496 Mag HO and am stumped as to the thread/pitch on the stock fuel pump. It came (used) with a 90° 1/4" elbow installed in the not 3/8" pump inlet; I'm running 1/2" lines from the tanks on for when I go big. Does anyone know what the pump inlet size is so I can source a AN fitting to install?

Thanks.

class6

What gen is it. 1-2-3? Early ones were push in. Most people tapped them and got rid of the junk. Take what was in there and match it up if it was tapped

Highliner

It's an '04. The pump has a threaded inlet, looked like a 3/8" but the thread pitch isn't. The 90 adapter does have a land for and has an o-ring.
In looking at the pump, I don't see that the end where the inlet is, is removable and so I doubt it'd work to drill and tap. Looked for a blowup dwg and nada.

SB

iTrader: (1)

Could be a 16mm x 1.5 Saginaw fitting. Those have o-rings and use a 3/8 pipe thru it. Go to a parts store, go to help section and check out there 'fuel line repair' section. See if one of these 16mm x 1.5 fittings fit to see if that is the right one. If so, you can order online AN fittings that fit - pretty much everyone makes them. 16mm x 1.5 to -8 or -10.

I believe the Dorman Part# is 800-170 . Again, don't buy and use, but it is to check your fitting size needed.

BUP

iTrader: (9)

gen II Merc cool fuel set up

BUP

iTrader: (9)

the boost pump are u looking at ? there can be one of 2 different used for that inlet . or are you looking at The high pressure fuel pump is in the cool fuel cell. which one here or both ???

on the boost pump inlet fitting I know one of the fittings - if that is the one used is .625 x .250 off the top of my head.

Highliner

Thanks. Yeah I figured it was metric.
The pump I'm talking about is the booster, mounted on the same brackets as the fuel filter/separator.

BUP

iTrader: (9)

I thought so as being the boost pump aka low pressure fuel pump, was the reason why posted that info,