Products to Compare (max of 3)
X
Compare These Parts
ALWAYS SECURE
America's Oldest Speed Shop ® Talk to the Experts. Call 800.979.0122, 7am-10pm, everyday.
Filters
Menu
Help Center
Help Center
x
Help Center

U.S.Order Line:

800.979.0122

(CST) 7am - 10pm

Race and Rod Tech Support

Mon-Fri 8am - 5pm

Canadian Order Line:

855.313.9180

International Order Line:

1.402.323.3200
Since 1952
Menu
x

Mustang II Power Steering Flow Valve for GM Pump, 2 GPM

SAME DAY SHIPPING! Order within the next 13 hours 46 minutes and receive same day shipping

Mustang II Power Steering Flow Valve for GM Pump, 2 GPM
Mustang II Power Steering Flow Valve for GM Pump, 2 GPM
Mustang II Power Steering Flow Valve for GM Pump, 2 GPM
Mustang II Power Steering Flow Valve for GM Pump, 2 GPM
Mustang II Power Steering Flow Valve for GM Pump, 2 GPM

Click image to enlarge

Details

Reviews (19)

Q & A (13)

What's in the Box

Info

It is common to use an early GM power steering pump with a Mustang II power rack and pinion. Most who have tried it have found that the steering was twitchy or that it easily darts. This valve reduces the fluid flow from three gallons-per-minute to two gallons-per-minute, which cures the problem. For applications using the O-ring style power steering hoses. Installs in the back side of the pump as shown in the extra photos.

If converting pump from modern 16mm o-ring to traditional 5/8" inverted flare style hoses, order (1) Adapter Insert 910-32921. 

910-32918 Instructions (PDF)

Customer Reviews

Rated 4.7 out of 5 by 19 reviewers.
RATING BREAKDOWN
19 reviews
5 Stars
16
4 Stars
1
3 Stars
2
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

Brewsky
Verified Purchaser
South Sioux city, ne

Worked just as I was told

April 02, 2016
Was told by a friend this is what I needed and it worked just as told great thanks
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

Ched
Verified Purchaser
Verified Reviewer
Versailles, France

Perfect for my Cobra replica

March 01, 2016
The feeling in the steering wheel is quite the same, but my car is more stable : I was surprised, but it's true ! And it's not expensive. (excuse my bad language, I am french).
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

Chevyman
Verified Purchaser
Missouri

Great product works as advertised

March 01, 2016
Great people fast delivery
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

Dugeman
Verified Purchaser
Verified Reviewer
New Jersey

Little Part Fixes A Big Problem remedy for twitchy steering

December 20, 2015
!938 Chevy with Mustang II suspension . It was darting all over the road .I installed the Mustand II Power Steering Valve by GMP and the problem was s. solved instantly ! No more darting , and no more twitchiness in the steering. Little part fixes a big problem!
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

burger
Verified Purchaser
spokane wa

worked great

October 14, 2015
steering works better a lot less senative
Pros:
  • Easy To Drive On Road
  • Steering Works Better
Cons:
  • None
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

Joe
Verified Purchaser
Verified Reviewer
East Tennessee, don't ask!!!!!!!!!!!!!!!

I don't know, maybe it's me..............

September 26, 2015
I didn't like the way the steering responded with the shim set, used 3 shims for the Mustang 2, as per directions, it was still over sensitive. So I bought this on their recommendation and the response is the same. It was a pain in the a-- to get the pump out and back in twice. I going to have to take my chances with it as is till I find a better solution. Will have to find a Ford pump, and adapt it. But for the time being I very disappointed in both products.....Joe
No, I would not recommend this product.
Full Size Image

Was this review helpful? 0 0

Finnagen
Verified Purchaser
Manteca, CA

Easy fix

September 20, 2015
Simple solution when using a GM pump with Mustang II rack and pinion.
Pros:
  • Only Minutes To Install
  • QUALITY PRODUCT
  • Simple Solution
  • Affordable
Cons:
  • None
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

sam
Verified Purchaser
Verified Reviewer
ky

worked perfect

May 20, 2015
smooth steering at highway speeds,,no twitchy-ness no leaks !
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

Corvette
Verified Purchaser

I would like to try a 1.5gph

March 10, 2015
Would be nice IF the instructions (not included) said must be used with another part for stock high pressure lines or it WILL leak!! Second order additional shipping for a very small part!
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

Merchant Response:

This customer was refunded for the shipping they paid on the flare adapter. We apologize for any inconvenience that was experienced and are always happy to help in any way that we can!
Chris33
Verified Purchaser
Arkansas

Awesome product and customer service

February 13, 2015
I had some issues with confusion on installing the part but customer service got me with a technician and we got it figured out within minutes. Thanks again!
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

Page 1 of 2

Product Q&A

13 questions : 17 answers

1 answers

Will this fitting work on an oem LS1 camaro p/s pump? 2002 camaro 5.7 ls1 power steering pump.

bildo
September 08, 2014

Will this fitting work on an oem LS1 camaro p/s pump? 2002 camaro 5.7 ls1 power steering pump.

Answers

September 09, 2014
EricM
The Mustang II flow valve does work on many GM pumps. If your pressure line goes to a large serrated looking nut on the rear of the pump then you should be able to remove this fitting and install the flow valve in it’s place. If your line is O-ring seal then it will go right in but if it has inverted flare then you will also need the flare adapter 91032921.
1 answers

Effect on stock GM system? I'd like to reduce the power steering assist on my 1993 civilian Caprice. Will this fit my stock pump and line, and make a noticeable difference? I'm not looking for a Vega manual box feel, but I'm not a fan of being able to spin the wheel from lock to lock with one finger. Thanks.

Zephyr351C
July 31, 2014

Effect on stock GM system? I'd like to reduce the power steering assist on my 1993 civilian Caprice. Will this fit my stock pump and line, and make a noticeable difference? I'm not looking for a Vega manual box feel, but I'm not a fan of being able to spin the wheel from lock to lock with one finger. Thanks.

Answers

August 05, 2014
EricM
This flow valve is for the GM Saginaw style pumps and is 16mm. It also works on many of the later year GM pumps including the remote reservoir pumps such as our number 91032906. It replaces the original flow valve which is located where the pressure line hooks to the pump. The new flow valve is set up for O-ring seal and if you have inverted flare on your line then the adapter number 91032921 would also be needed. It will make you power assist much less than with the stock flow valve and could give you the feel you are after.
1 answers

will this work or give me a problem with running a hydro-booster for brakes Mustang II power rack with GM style hydrobooster for big cam shaft. Uses power steering pump for brake assistance.

57stepside
Mira Loma, CA, USA
February 06, 2014

will this work or give me a problem with running a hydro-booster for brakes Mustang II power rack with GM style hydrobooster for big cam shaft. Uses power steering pump for brake assistance.

Answers

February 06, 2014
EricM
This will not work well if using the power steering pump for a hydroboost for power brakes. This will cut down the flow of the pump which must supply the hydroboost as well. Sorry I do not have anything that I can recommend for use with a hydrobooster.
1 answers

Does this reduce psi as well as flow? GM/Saginaw pump with '90 Cavalier rack

Hugh
Santa Cruz, CA, USA
January 10, 2014

Does this reduce psi as well as flow? GM/Saginaw pump with '90 Cavalier rack

Answers

January 10, 2014
Travisp
This will decrease the flow and the rack will see a decrease in pressure as well.
3 answers

What fitting is used to connect female hose end to this valve. I'm replacing my power steering pump on 1966 chevy c10. I can install old flow valve but not sure it will work with pump. Any way to connect traditional hoses to this. Thanks

July 16, 2011

What fitting is used to connect female hose end to this valve. I'm replacing my power steering pump on 1966 chevy c10. I can install old flow valve but not sure it will work with pump. Any way to connect traditional hoses to this. Thanks

Answers

March 11, 2015
Corvette
That fitting will work BUT you must add a additional internal part that they also sell, order at the same time and save shipping! It does slow down the "feel" of the steering wheel. I would like to try a 1.5 gph.
November 03, 2013
lar405
if your hose has a o ring yes
July 18, 2011
John
This Flow Valve has 16mm O ring female and with our flare adapter number 91032921 will accept OEM style hoses with 5/8 x 18 inverted flare male hose ends. If your original hoses have a female end to match up to pump with male fitting out the back our flow valve will not be a direct replacement. In some GM applications the male fitting out the back will screw out of the pump similar to the fitting of the standard Saginaw style pump that is female. On our website there are thumb nail photos of the pumps at various angles and also a PDF instruction file to help with installation.
2 answers

What fitting is used to connect to an an hose?

June 02, 2011

What fitting is used to connect to an an hose?

Answers

November 03, 2013
lar405
o ring type hose
June 03, 2011
Jason
Part #6174806
2 answers

will this fitting fit a 80's ford P/S pump???

August 16, 2011

will this fitting fit a 80's ford P/S pump???

Answers

November 03, 2013
lar405
no
August 17, 2011
John
This part is specific to the GM Saginaw style pump and several aftermarket pumps and also the GM remote reservoir pumps. It reduces from the GM flow of 3 gallon per minute to the desired Ford flow of 2 gallon per minute. Ford had a few different styles of pumps used throughout the years adn doubtful this would thread into the Ford pumps. The gain would not be as great as acheived for the GM pump but could show some reduction in flow. Most Ford pumps are 2 gallon per minute as they come from the factory. What we may suggest to acheive your desired flow is our adjustable power steering valve number 91032923.
1 answers

will this valve work on a gm 2 power steering pump

chuck
batavia ohio
July 10, 2015

will this valve work on a gm 2 power steering pump

Answers

July 10, 2015
Eric
Expert
No this valve is only designed for the early GM Saginaw power steering pumps.
1 answers

What size is the orifice in this valve ?

RATTLER
Eagle River, Wi.
October 07, 2015

What size is the orifice in this valve ?

Answers

October 07, 2015
Eric
Expert
The orfice size of this flow valve is .115"
1 answers

Hi. I am running an 81 Monte Carlo power steering pump and frame mounted steering box on my 41 Olds. Is this the correct item and if not, what would you suggest? Thanks

Jim
October 14, 2015

Hi. I am running an 81 Monte Carlo power steering pump and frame mounted steering box on my 41 Olds. Is this the correct item and if not, what would you suggest? Thanks

Answers

October 20, 2015
John
Expert
If you have a type 1 GM pump such as number 91032908 where the pressure line connects the existing valve comes out and this valve goes in it's place to eliminate or improve oversteer or twitchy feeling while driving for better road feel. It also works in the later GM pumps with the 5/8 or 16mm fittings. If trying to use existing hoses and they have inverted flare you will also need the flare adapter number 91032921.
Page 1 of 2

You may also be interested in:

  • Power Steering Hose Kit for 1982-88 T-Bird Steering Rack to GM Pump Power Steering Hose Kit for 1982-88 T-Bird Steering Rack to GM Pump
    (9)
    $94.99
    Compare
  • Mustang II-GM Pump Power Steering Hose Kits Mustang II-GM Pump Power Steering Hose Kits
    (8)
    $94.99
    Compare
  • Tuff Stuff GM Saginaw Power Steering Pump with Reservoir Tuff Stuff GM Saginaw Power Steering Pump with Reservoir
    (7)
    $159.99
    Compare
  • O-Ring to Inverted Flare Power Steering Adapter O-Ring to Inverted Flare Power Steering Adapter
    (11)
    $9.99
    Compare
Suggestions For You