I was thinking about cleaning this parts car fuel filter up and using it? is it period correct?

Its period correct but not Chevrolet GM correct. Was a popular filter

What brand is that fuel filter?

What should I use to be correct?

The accessory fuel filter Chevrolet sold from 1946-1954 has the word DUREX cast into the top of the casting. It has a glass bowl that that has a hole in the bottom. A threaded stud with a wing nut goes through the hole up into the housing to hold the bowl in place. A sintered bronze filter element in inside.
From 1946-1948 the bowl was about 1 1/4" deep. In1949 it was reduced slightly in diameter and about 1" deep. The filter was made by the Moraine Division fo GM.

Here is a 1948 Durex..The bowl is very round un like most the others you see
The bowl is 1 1/4" deep

dads51 -

Probably more than you ever want to know about gasoline filters. I believe the information to be accurate. Please let me know of any errors.

What year is your vehicle, I assume a 1951? Is it a passenger car or truck?

Your filter and fitting look like a dealer installed GM Durex Moraine 986640 Gasoline Filter on a Chevy truck. If it's a 1951 truck, then it is perfectly period correct.

The angled fitting is 60-deg and was supplied for 1950-1954 trucks and 1953-1954 sedan delivery.
> 1929-1954 MPC - Group 3.890

> Installation instructions in the 1954 Acces Inst Man

If you need a cork gasket, I posted links to patterns ...
> in this VCCA Chat thread

If you need a bronze filter element, they sometimes appear on ebay.

Durex Moraine filters were produced by GM and installed by dealers, plus sold as aftermarket filters for most vehicles.

GM offered a Durex Moraine #986128 gasoline filter as an accessory installed by the dealer 1947-1949. There was a different part number for a similar filter. I can't find the number and don't know if there were differences or if it was just packaged with different fittings. The filter had a glass bowl with a winged thumb screw through the bottom of the bowl. The filter element was porous metal. It's pretty cool looking.
> Durex 986128 gasoline filter - April 1949 Motor Age ad

Although this photo is in the 1951 Accessories Installation Manual, GM did not produce the filter in the pic after 1949. Durex Moraine #986128
> Pre-50 filter in '51 Manual

> Chevrolet Accessories for 1948 "Filter Unit - Gasoline" #986128 (price for 12 filter units)
> 1949 Chevrolet Accessories Brochure "Gasoline Filter Unit"

In 1950 GM changed the design to a glass bowl with a bale and thumb screw. Durex #986399. I have read that a special 60-deg fitting was included with the filter in 1952 to allow it to clear the automatic choke on a Power Glide passenger car and the number was changed to 986640. I can't confirm the reason. The fitting is shown on the truck installation instructions. Trucks did not have PG transmissions. I don't know of any modern supplier that sells the 60-deg fitting.

> Durex #986640 in 1953 ad
> Durex #986640 on my '54 3104 (incorrect 45-deg fitting)

I don't believe that GM offered an accessory gasoline filter in 1955, except for 1955 1st-series trucks.
1955 1st Series Trucks Accessories
"Filter, Gasoline" 3100, 3600, 3800, 4000, 6000
No part number or price
> 1955 GM Resto Kit

A GM AC #987500 filter was offered in 1956. In 1957 the filter was changed to accy number 987629 (with fittings) or 854345 - bare filter only. I'm not sure which of the filters was the glass bowl filter with a flat metal top, or which was the glass bowl filter with a dome metal top.

1956 Passenger Car Accessories:
Filter Unit - Gasoline All Exc 3400, 3500, 3700
#987500
$2.35 each Suggested List, $1.41 Dealer net
> 1956 Passenger Car Accessories

1956 Truck Accessories:
Filter - Gasoline (Use with 8,000, 9,000, 10,000
#987500
$2.35 each Suggested List, $1.41 Dealer net
> 1956 Truck Accessories

> Filter 1929-1957 MPC - Group 3.890

And if this has not been gasoline filter overload, then here is a thread by Chevgene and others that tells even more!
> VCCA Chat thread

Good luck with your filter.

- Lonnie

Your right more than enough info. Thanks

It is a passenger car and I ordered another more correct one to replace this one.

Lonnie,
Thank you for the extensive gas filter history.
One thing I had wrong this time is the deep bowl Durex Moraine filter began in 1950 and not 1949. Was new for the Rochester carburetor.
At the dealership I worked at in 1950 (and up) we installed a gas filter on every new vehicle. This was because there were a lot of problems with the carburetors flooding over. We installed a Moraine all metal disc type filter .Very thin and about 2" in diameter with a drain plug. Was easy to unstall as very little line modification was neceaasry. Purchased them through a UMS dealer.

This is the part I don't understand. The 1950 parts book shows 5452821 for the glass bowl for the new filter. This is the bowl with the hole on the bottom for the retaining stud. The 1954 parts bo0k shows the same bowl for 1950-1954 which leads me to believe that that style filter was used up though 1954.
The filter with the bail has no bowl listed in the Chevrolet parts book so it is my feelings that the bail type filter was not available from Chevrolet but through a United Motor Service part house only. It was not unusual for UMS to handle a different part/accessory than what was sold through Chevrolet although they were all divisions of GM.
Not that the picture of the bail filter has the UMS logo on the box so was not a Chevrolet box.

Do you have a picture of the bail type filter in a Chevrolet parts box or a Chevrolet publication showing that filter?
I know the 1953 Chevrolet accy. installation manual shows the top of the bail but the 1954 shows the other style filter to. More confusion but the picture for the 1953 may have come from UMS.
Somewear I had pictures of the filters in boxes that were posted here but can't find them right now.
Your thoughts

Gene

Gene -

You are the parts expert. I don't have the first-hand experience that you have. But I have been researching the filters for a while. Don't know why I am so attracted to them.

The photos that I have of the boxes for the filter unit with the thumb screw through the bowl are labeled "Durex Moraine, a division of General Motors."

Photos of the boxes for the filter unit with the bail do not have "division of General Motors" on them.

Ads are labeled "Durex Moraine," "United Motor Service", and "a division of General Motors."

Filter #986118 and #986128 are listed in the 1948 Passenger Car GM Resto kit. Only #986118 is listed for Trucks. (That was the part number that I couldn't find in my previous post.) Perhaps #986128 included a fitting for cars with Power Glide transmissions (???)

1948 Passenger Car:


1948 Truck:


A filter is listed in the 1949, 1950, and 1951 Resto kit, but does not have a number

Answer to your question:
Photos / illustrations of the filters in Chevrolet Accessories brochures show that GM/Chevrolet promoted the filters.
> 1949 Chevrolet Accessories Brochure
> 1954 Chevrolet Truck Brochure

I can only use the MPC to indicate the dates that the two types of units were used. Some of the part numbers may have been deleted as newer items were introduced that would fit older vehicles. Since the filters were dealer-installed, the actual dates probably had more to do with what the dealer had in inventory than the dates that GM changed the design.

I don't have info on the sizes of the glass bowls or the part numbers. However, "chef-chevy" recently bought a box of glass bowls still in the wrappers. Perhaps he can fill us in on the details.

The 1954 Accessories Installation Manual shows the filter with the bail and labels it as #986640.
> 1954 Installation

(The 1954 Installation file is on my Google Drive account. Some versions of Internet Explorer cannot access the file. Google is working on a fix.)

By the way, here is a short video of the 986640 filter at idle in my '54 3104:
> Glass Bowl Video

Thanks for your help. I'm always looking for info to update my files.

- Lonnie

In case I haven't put you to sleep with my ramblings about gasoline filters, here are two links about dome-top AC filters:
> 1957 GM fuel filter
> More dome-top info (scroll down)

If the body of you bail-type filter unit is warped from overtightening, here is how I repaired mine ...
> Warped filter repair

- Lonnie