ARP Premium Rod Nuts for Flathead Ford V8
ARP Premium Rod Nuts for Flathead Ford V8
ARP

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#101AR239

ARP Premium Rod Nuts for Flathead Ford V8

  • These nuts are a must when you rebuild your Flathead
  • Original flathead bolts are non-serviceable and must be reused
  • The castle nut design may differ slightly in appearance from OEM
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$21.99

/set

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Product Summary

.38" Overall Height, 3/8-24" Thread Pitch, Steel, Black

  • These nuts are a must when you rebuild your Flathead
  • Original flathead bolts are non-serviceable and must be reused
  • The castle nut design may differ slightly in appearance from OEM
  • Features rolled threads, high strength steel, and black oxide finish
  • They fit '32-'53 Ford/Mercury V-8 engines using standard 3/8" rod bolts
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Key Specs

BrandARP
Overall Height.38"
Thread Pitch3/8-24"
Material TypeSteel
FinishBlack Oxide
See more specs

Need To Know

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Details

Repeated torquing of your rod nuts fatigues the threads. Don't take a chance – replace your Flathead Ford V8's old fasteners with the superior strength and quality of ARP rod nuts. ARP specialty hardware can be found in NASCAR, NHRA and IndyCar racing applications, so you can be sure it's strong enough for your flathead.

  • Rolled threads, high strength steel, and black oxide finish  
  • A must when you rebuild your Flathead
  • Castle nut design may differ slightly in appearance from OEM
  • Fits '32-'53 Ford/Mercury V-8 engines using standard 3/8" rod bolts
  • Original flathead bolts are non-serviceable and must be reused
  • Set/16 nuts

Specifications

KEY SPECS
BrandARP
Overall Height.38"
Thread Pitch3/8-24"
Material TypeSteel
FinishBlack Oxide
GENERAL
Sold in QuantitySet
NotesLoctite 271 should be utilized upon installation.
ColorBlack

Ratings & Reviews

5

13 Reviews

Overall Assessment

Customers endorse our product for its high quality, practicality, and reliability. Their feedback emphasizes the superiority of the product, noting it as an upgrade over factory or OEM parts, providing better seating than full hex nuts, and eliminating the need for cotter pins or pal nuts. The product's usability is praised, with customers lauding its effectiveness in their projects, particularly in rebuilds. It's perceived as essential to specific builds, like the Ford 239 flathead. The product stands out versus competitors due to its consistent performance and capacity to surpass expectations.

Write A Review

5

13 reviews

5

13

4

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3

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excellant product.

5.0

4 months ago

John

Melbourne VIC

Verified

Product fitted well and easy to install.

Would Recommend

Great security

5.0

11 months ago

Joe

Texarkana Arkansas

Verified

Bought to ensure my flathead rod caps are secure. A great upgrade from factory nuts.

Would Recommend

Customer review image

I would buy this product again

5.0

12 months ago

Freddyfairlane

Winnipeg Canada

Verified

Quality part,

Would Recommend

Would buy again

5.0

a year ago

Freddyfairlane

Winnipeg Canada

Verified

Quality parts

Would Recommend

Very good product

5.0

a year ago

Eric

Napierville, Québec, Canada

Verified

Replaces the original nuts very well, works very well,

Would Recommend

I would buy again

5.0

2 years ago

Po' Man

NC

Verified

Good quality

Would Recommend

Definitely

5.0

4 years ago

Hot rod bob

Lancaster Va

Verified

I have been buy parts from speedway for over 40 years

Would Recommend

I would buy this product again

5.0

7 years ago

Evan

Conroe texas

Verified

these were real nice hey was a good upgrade to my project and I know they are better than Factory ARP build some good stuff

Good quality

5.0

7 years ago

Alex

Hamilton New Zealand

Verified

Good insurance using these new items

Would Recommend

a must have

5.0

8 years ago

oliverpart

Ohio

Verified

if your rebuilding a ford 239 flat head these are a must. the flange seats better on cap than any full hex nut ever will and no more cotter pins or pal nuts.

Would Recommend

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Showing 10 of 13 reviews

Questions & Answers

3 Questions • 3 Answers

Is there any reason these wouldn't fit on sbc 350 rod bolts? I believe there the same size and include 16 like I need. Or do u have any for a sbc 350

by James

• 7 years ago

1 answer

View Answer

Could I possibly get the gram weight of one ARP Flathead rod nut? I've already balanced my rotating assembly and am curious how close these ARP nuts weigh to a stock Ford nut. It should be negligible, but, I'd like to know before I order...

by CJ

• 9 years ago

1 answer

View Answer

Do these nuts have locking elements?

by 2853KS

• 12 years ago

1 answer

View Answer

3 of 3 questions shown

Fitment

  • 221 Ford Flathead V8

  • Ford Flathead V8 17 Stud 221 18

  • Ford Flathead V8 21 Stud 221 40

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 255 Ford Flathead V8

  • 337 Ford Flathead V8

  • 239 Ford Flathead V8

  • 221 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

  • 239 Ford Flathead V8

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