Re: {Chrysler 300} fuel pump question/recommendation
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Re: {Chrysler 300} fuel pump question/recommendation

As luck would have it, the closest gas station to my house is only a 4 miles away and is a CEFCO that sells ethanol free gas, so that's what I use in both my Hurst and G, as well as in my lawnmower and other small engines.
I noticed on looking at spec of this Autozone pump, that it is rated at 20 gal/hr and a mininum pressure of 2 psi (no max or normal range listed).  
Another pump from O'Reilly is M16077 that is rated at 30 gal/hr and has a pressure listing as 4-5.5 lbs of pressure.  I'm tempted to go for one of those and returning the one I got at Autozone.  Maybe I got a 2 psi unit from Autozone that wasn't quite getting the job done?

On Sun, Aug 16, 2026 at 9:31 AM William Huff <whuff@xxxxxxxxxx> wrote:

I don't know, but I have had two different OEM fuel pumps for 440s, with diaphragm failures due to Ethanol gas.  I wouldn't use older fuel pumps unless you don't use ethanol gas.

Bill Huff

On 8/16/2026 8:15 AM, pffkllc via Chrysler 300 Club International wrote:
I have no idea as when or how I got it, but I have an NOS mopar pump still in the box with a number 2275 573, and hand written on the box is "64 RAM K."  I didn't write that, and have no idea who did, but apparenty that is what it is for.  Any ideas??? 

Pete Fitch 

On Saturday, August 15, 2026 at 05:15:50 PM EDT, Jay Williamson <letterpressman@xxxxxxxxxx> wrote:

Is the M3672 also used on the 1960?
Jay Williamson
317-223-1379


On Aug 15, 2026, at 4:50 PM, 'ALLAN POZDOL' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote:


Actually, Carter is discontinued this year. The $14 price was a warehouse clearance. Most stores are out of stock on this pump.
 
First Brands Group, LLC, will permanently close Carter Fuel Systems in Logansport on April 30, ending a business which has a history in the area dating back more than 115 years.
 
Allan
On 08/15/2026 3:35 PM CDT Carl Bilter <cbilter@xxxxxxxxx> wrote:
 
 
Yes, it looks like this pump is getting discontinued.  Search on the Rock Auto parts catalog for your car and a couple other brands show up as still in stock, bu t others out of stock.  
 
Carl
 
 
 
------ Original Message ------
From "'Keith Langendorfer' via Chrysler 300 Club International" <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
To "Carl Bilter" <cbilter@xxxxxxxxx>
Date 8/15/2026 2:59:42 PM
Subject Re: {Chrysler 300} fuel pump question/recommendation
 
 
Looks like all of these M3672 pumps are gone as I cannot locate it on the Rock Auto site .
 
Keith 

On Aug 15, 2026, at 3:42 PM, Carl Bilter <cbilter@xxxxxxxxx> wrote:

Wow, I think it's rated 5.5 max psi, go figure.  Must be a quality control  issue on new Carter pumps?  I recently installed a new M3672 bought in 2024 on my G, no flooding or other issues so far, fingers crossed.  Best answer is rebuild an original, if have available, kits from Then & Now, but a lot more than $14.
 
Carl
 
------ Original Message ------
From "'ALLAN POZDOL' via Chrysler 300 Club International" <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Date 8/15/2026 2:12:59 PM
Subject Re: Re[2]: {Chrysler 300} fuel pump question/recommendation
 
The M3672 is the one I bought, putting out 8 PSI. Flooding my carb.
On 08/15/2026 1:59 PM CDT Carl Bilter <cbilter@xxxxxxxxx> wrote:
 
 
The new Carter pumps that look identical to original 59-63 pumps (M6903) put out way too much pressure even for a ram car.  Ram car doesn't need more than 3.5 to 5 psi maybe?  There was one on my G and it kept flooding the carbs.  I'm not the only one that has had that problem.  Use the '64 and up style on the Rock Auto closeout (M3672) and it should be fine.  Bargain price!
 
Carl B.  
 
 
------ Original Message ------
From "'ALLAN POZDOL' via Chrysler 300 Club International" <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Date 8/15/2026 1:21:23 PM
Subject Re: {Chrysler 300} fuel pump question/recommendation
 
Hi John,
 
I just went through some fuel pump issues and found that all the RB motors, single and dual carb for 1964 had the very same fuel pump, 2495 528.
RockAuto has closeouts on a Carter made in Mexico pump for $14! Last of the line if you hadn't heard.
 
The new pumps puts out 8PSI.That should certainly feed two carbs if that is what you need!
 
I had to buy a regualtor to get the pressure down to an acceptaable level for my 3614S 360HP K.
 
Allan
On 08/15/2026 12:24 PM CDT John Nowosacki <jsnowosacki@xxxxxxxxx> wrote:
 
 
 
 
-- I've noticed looking at online auto parts stores, that the recommended fuel pump is almost always the same for 61 Chrysler 300, 70 Chrysler 300 (with engine code T, U, or V) and is an unexpectedly low price of around $25.  I seem to remember way back when, that a different pump was listed for a car with 2-4bbl carbs or a U or V in the VIN of a 440 equipped engine?
Anyone else notice this, or find a way of looking up a fuel pump for an engine that may require more fuel than a lower performance version of a 413 or 440, or does it no longer exist (or matter)?

 

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