9 In. Ford Rear End Overhaul Kit 31S Spline 1.781 I.D./3.063 O.D.
9 In. Ford Rear End Overhaul Kit 31S Spline 1.781 I.D./3.063 O.D.
Speedway Motors

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#9190950-31S

9 In. Ford Rear End Overhaul Kit 31S Spline 1.781 I.D./3.063 O.D.

  • Save time and money with a complete overhaul kit for your 9" Ford third member
  • This complete 9" Ford overhaul kit includes a full bearing set, pinion nut, pinion seal, gasket, shims, crush collar, sealant, gear marking grease, brush and Loctite
  • 28 spline version has LM501349 carrier bearings which are 1.625" ID and 2.879" OD
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Spool Spline:

31S Spline

$120.99

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Product Summary

Ford 9 Inch, Grand National

  • Save time and money with a complete overhaul kit for your 9" Ford third member
  • This complete 9" Ford overhaul kit includes a full bearing set, pinion nut, pinion seal, gasket, shims, crush collar, sealant, gear marking grease, brush and Loctite
  • 28 spline version has LM501349 carrier bearings which are 1.625" ID and 2.879" OD
  • 31 spline version has LM102949 carrier bearings which are 1.781" ID and 2.879" OD
  • 31s version has LM603049 carrier bearings which are 1.781" ID and 3.063" OD as well as Daytona pinion bearing
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Key Specs

MFG. Part #9190950-31S
BrandSpeedway Motors
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Speedway Motors 9190950-31S Details

This 9" Ford overhaul kit includes: pinion pilot, pinion shaft, pinion nut, pinion seal, gasket, shims, crush collar, sealant, gear marking grease, brush and Loctite. Ring gear bolts not included.

NOTE: All Ford 9" full spools use overhaul kit 9190950-31, even if they are a 28-spline spool. The 9190950-31 contains the large I.D. standard O.D. carrier bearings and pinion bearings needed for use with our full spools.

If you are using the H.D. nodular iron center section which uses the large diameter carrier bearings, order kit 9190950-31s, which also includes the large pinion bearings for use with the Daytona pinion support.

- Double check your bearing p/n.

  • 9190950-28
    • Includes carrier bearing # LM501349
    • 28-spline axles DO NOT guarantee that the LM501349 bearings are used in the carrier. If in doubt, double check the bearings used and then order accordingly.
  • 9190950-31
    • Includes carrier bearing # LM102949
    • 31-spline axles DO NOT guarantee that the LM102949 bearings are used in the carrier. If in doubt, double check the bearings used and then order accordingly.
  • 9190950-31S
    • Carrier bearing # LM603049 (CONE) and LM603011 (CUP) TM88048 (CONE)
    • Outer pinion bearing TM88010 (CUP)
    • Large "Daytona " inner pinion bearing HM89443 (CONE)
    • Race # HM89410 (CUP)
      • LM603049 CONE ID: 1.781 "
      • LM603011 CUP OD: 3.063 "
      • TM88048 CONE ID: 1.308 "
      • TM88010 CUP OD: 2.687 "
      • HM89443 CONE ID: 1.308 "
      • HM89410 CUP OD: 3.00 "

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Speedway Motors 9190950-31S Specifications

KEY SPECS
MFG. Part #9190950-31S
BrandSpeedway Motors

Ratings & Reviews

4.6

59 Reviews

Overall Assessment

The product received positive reviews for its completeness, quality, and affordability. Customers praised the comprehensive nature of the kit, stating it contained all necessary parts needed for their respective projects. The quality of the products was confirmed by most users who appreciated its practicality and usability. Some customers mentioned problems concerning specific fitment of bearings and recommended careful checking before purchasing. However, once correct kits were received, customers appreciated the fit and quality of the bearings. Value for money was highlighted by many, stating it served as a more cost-effective option compared to purchasing individual parts. Despite rare instances of wrong sized components, the general consensus was of satisfaction and repeat purchase intention.

Write A Review

4.6

59 reviews

5

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Most Liked Positive Review

5.0

Excellent parts and great price. Makes my job easier.

I have used this product for years and have never heard a complaint from any customer. Having a complete kit like this is the only way to go. If it had the option for ring gear bolts for posi units then I would have everything in one box.

Most Liked Negative Review

1.0

Parks did not fit.

The Ford 9" overhaul kit bearings did not fit my 9" 28 spline rear end. Called the tech people, they said I should have ordered the kit the "31S spline kit", which was not indicated as an option in their product description. Then, when this information was sent to the customer service people for ordering, they sent me the "31 spline kit". Once again, the bearings did not fit since it was not the kit the tech people said they were to send. Finally, after three phone calls the correct "31S kit" was sent, finally installed and the bearings fit. Just be careful, the 9" Ford rear-end has different bearing sizes for 28 spline rear. Material sent were quality products.

Filter by Ratings

Yep

5.0

10 days ago

Bob

Nebraska

Verified

Worked great

Would Recommend

Yes

5.0

5 months ago

Harvey

El Paso TX

Verified

Honestly we have not installed them yet but after we do I'll will let you all know

Would Recommend

Good product and shipped fast

5.0

9 months ago

Wandering

Iowa

Verified

Great kit for when you bought a 9 inch rear end with a destroyed bearing inside.

Would Recommend

Oooo yeah buddy

5.0

a year ago

Jiggerboy

Yeah that part

Verified

Thanks Biden

Would Recommend

Yes

5.0

a year ago

Brando

Sturgis SD

Verified

Damaged in shipping, need to buy new main gasket.

Would Recommend

I would by again

5.0

2 years ago

Mach

Elizabethtown Pa

Verified

Good quality parts and good description. I wish the copper washers behind the retainer nuts would come with the kit otherwise all needed parts are there.

Would Recommend

I will buy this product again

5.0

2 years ago

Badwolf40

Poway California

Verified

Has all necessary parts to complete the project

Would Recommend

2nd kit I've purchased

5.0

3 years ago

Bob

Odessa tx

Verified

Nice kit

Would Recommend

Parks did not fit.

1.0

3 years ago

Tim

Cedar Rapids, IA

Verified

The Ford 9" overhaul kit bearings did not fit my 9" 28 spline rear end. Called the tech people, they said I should have ordered the kit the "31S spline kit", which was not indicated as an option in their product description. Then, when this information was sent to the customer service people for ordering, they sent me the "31 spline kit". Once again, the bearings did not fit since it was not the kit the tech people said they were to send. Finally, after three phone calls the correct "31S kit" was sent, finally installed and the bearings fit. Just be careful, the 9" Ford rear-end has different bearing sizes for 28 spline rear. Material sent were quality products.

Would Recommend

Decent.

5.0

4 years ago

mel4x4

waseca, MN

Verified

This is a pretty complete kit, just wish you could upgrade to viton seal and hard pinion spacer right away.

Would Recommend

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Showing 10 of 59 reviews

Questions & Answers

5 Questions • 5 Answers

The 31s kit is correct for me exept one thing. The daytona larger race diameter will not work. I need 2 each of the TM88048 and TM88010. Does this mean that the 31 kit will work for me? Listed are my rough Measurments of the existing Pinion and Carrier Bearings. Carrier Bearings OD-3.058 ID-1.784 Pinion Bearings OD-2.689 ID-1.310

by rrayburn

• 7 years ago

1 answer

View Answer

Are the pinion bearings in the 31 spline kit the same for inner and outer? If not what part number is for the inner and which one for the outer?

by Ryan

• 9 years ago

1 answer

View Answer

Why does the 31s kit come with pinion bearings for a daytona pinion support but only has a short crush sleeve that is unusable in a daytona support? I needed an overhaul kit with 3.063 side bearing od with standard pinion bearings, you don' offer that so I bought the 31s kit and went and and got your daytona aluminum pinion support. The crush collar is too short so i've got to find a spacer kit somewhere.

by KS23

• 12 years ago

1 answer

View Answer

I want to replace the seals and bearings in my 69 mustang mach 1. It has the 9" rear end, so I am assuming this kit will work. I see this comes with a different size carrier bearing. Which one is appropriate for my vehicle? 28, 31 or 31s.

by Larry

• 14 years ago

1 answer

View Answer

The "s" on the end of the part number, does it mean it's for a spool? I've read the side note about the full spool uses the 31 spline kit, just wondering the difference?

by

• 15 years ago

1 answer

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5 of 5 questions shown

Fitment

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