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Eligible for Return, Refund or Replacement within 30 days of receipt
Eligible for Return, Refund or Replacement within 30 days of receipt
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Eligible for Return, Refund or Replacement within 30 days of receipt
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ARP 247-4202 Stud Kit

4.7 4.7 out of 5 stars 238 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice
$446.99
Stud Kit
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Purchase options and add-ons

Grade Rating Grade 8740
Exterior Finish Painted
Manufacturer Grade Grade 8740
Brand ARP

About this item

  • Lubricate the both sides of the washers with ARP ultra-Torque Fastener Assembly Lubricant then place them over the studs onto the cylinder head spot faces.
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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Item model number ‏ : ‎ 247-4202
  • Date First Available ‏ : ‎ June 6, 2008
  • Manufacturer ‏ : ‎ ARP
  • ASIN ‏ : ‎ B001ASMEFK
  • Customer Reviews:
    4.7 4.7 out of 5 stars 238 ratings

Product Description

(Cummins 5.9L Dsl 24V) Built for the (98-02) Dodge Ram 2500... Obtaining the optimum cylinder head-to-block sealing is especially critical in small displacement engines employing high compression pistons or power adders like turbochargers, nitrous oxide and superchargers. That's why ARP head studs are popular among leading Sport Compact/Import racers.You should know that ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Then, each stud is precisely heat-treated to 200,000 psi. Following heattreat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It's important to note that lesser quality studs are not even centerless ground the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned something that won't happen with inferior quality head studs.ARP studs are thread rolled after heat-treat, which gives them about 1000% (that's ten times) better fatigue strength than those studs that are threaded prior to heat-treat.You will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the "stretch" of both studs, which makes for a more consistent clamping force one that compensates for head gasket compression when the head is installed. This helps prevent blown head gaskets, and assures optimum sealing!

Top Brand: ARP

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From the manufacturer

About Us

They say that to be successful you must identify a need and satisfy it. Back the early 1970s, racing enthusiast Gary Holzapfel saw that many of his friends’ broken engines were caused by fastener failure. At the time, there were no commercially available studs and bolts up to the challenge. So Holzapfel called upon his many years of fastener making experience for one of the leading aerospace subcontractors and founded ARP (Automotive Racing Products). Today, ARP’s product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline and throughout the suspension and frame. These range from quality high performance OEM parts to exotic specialty hardware.

What's in the box

  • Head Stud & Bolt Kits

    • Product guides and documents

    Installation Manual (PDF)

    Looking for specific info?

    Customer reviews

    4.7 out of 5 stars
    4.7 out of 5
    238 global ratings

    Customers say

    Customers like the quality, ease of installation, performance, and fit of the bolts. For example, they mention it's an obvious quality upgrade, works great, and fits perfectly.

    AI-generated from the text of customer reviews

    15 customers mention15 positive0 negative

    Customers are satisfied with the quality of the bolts. They mention that it's a good product, an obvious quality upgrade, and awesome parts. Some say that the stud kit is stronger than stock and worth the money.

    "It’s pricey but you get what you pay for. Amazon makes it a better value and convenient." Read more

    "Seems like a quality product. Already had the head off, so easy to install" Read more

    "...Shows studs have been torqued previously. Replacement set was great. Worth the money" Read more

    "Stronger then stock! Fit my 2003 5.9 24 vavle dodge Cummins great!..." Read more

    8 customers mention8 positive0 negative

    Customers find the installation of the bolts to be easy. They mention that the mechanical sense and the install will go smoothly. Some say that the cummins platform is easy to work on.

    "...in, cylinder 5 and 6 are tough on the body but the cummins platform is easy to work on...." Read more

    "...Amazon makes it a better value and convenient." Read more

    "Excellent. As advertised. Have some mechanical sense and the install will go smoothly. Go slow, take you’re time...." Read more

    "Seems like a quality product. Already had the head off, so easy to install" Read more

    6 customers mention6 positive0 negative

    Customers are satisfied with the performance of the bolts. They mention that it works great and is very good.

    "ARP is second to none when it comes to fasteners. These worked great on my 6.7 Cummins. Install is a little work...." Read more

    "...As far as the studs are concerned; everything works as it should, and holds better!..." Read more

    "2004 dodge 2500. Works awesome. I push about 30 psi regularly. I did a new head gasket and installed these. So far, no leaks...." Read more

    "Works perfect" Read more

    4 customers mention4 positive0 negative

    Customers are satisfied with the fit of the bolts. They mention that they fit perfectly on their 99.

    "Ok they fit perfect on my 99 did factory torque then stepd to 100 ft lbs then did the final 125 ft lbs but not sure if i have to re torque can..." Read more

    "Awesome stud kit...perfect fit. Thanks for the extra Stud lubricant, had more than enough." Read more

    "Great Part Fit perfect" Read more

    "Great product, fit truck as described, and arrived on time." Read more

    Top reviews from the United States

    Thundercat
    5.0 out of 5 stars Obvious quality upgrade.
    Reviewed in the United States on April 26, 2022
    Style: Stud KitVerified Purchase
    It’s pricey but you get what you pay for. Amazon makes it a better value and convenient.
    Helpful
     Report
    Christopher
    5.0 out of 5 stars 2013 Ram 6.7 Cummins
    Reviewed in the United States on March 10, 2024
    Style: Stud KitVerified Purchase
    Dropped right in, cylinder 5 and 6 are tough on the body but the cummins platform is easy to work on. I had to remove the Upper and Lower valve covers, the injector wiring, the rocker girdle/risder, and I had to remove most of the intake rockers to get a socket on, you might be able to do it with thin wall sockets. You also need to trim the rocker girdle with a die grinder or you won't be able to install. Adjusting the rockets is easy, see dark iron diesels video on youtbe. Should add some strength to my truck for a 467 upgrade.
    Helpful
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    Muzzy
    5.0 out of 5 stars Excellent Quality
    Reviewed in the United States on May 7, 2015
    Style: Stud KitVerified Purchase
    ARP is second to none when it comes to fasteners. These worked great on my 6.7 Cummins. Install is a little work. Plan to adjust your rockers if you are performing a bolt to stud swap since you will have it apart anyway. It took about 5 hours to complete including the occasional break to rest the back and grab chow. I also replaced the rocker housing gasket with a new one. If you are a non-commercial owner of a Cummins (Dodge Ram etc), they you can register and find all the engine info you need at https://quickserve.cummins.com. You just need the serial number off the engine tag to register.
    19 people found this helpful
    Helpful
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    mark b
    5.0 out of 5 stars If ARP seal broken. Check that the nuts go on studs easily.
    Reviewed in the United States on February 13, 2022
    Style: Stud KitVerified Purchase
    First set came used. Looked good. Nuts start good, then start dragging about 1/3 down threads. Shows studs have been torqued previously. Replacement set was great. Worth the money
    One person found this helpful
    Helpful
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    Joel Hilden
    5.0 out of 5 stars Perfect upgrade for blown head gasket on Cummins 6.7L
    Reviewed in the United States on November 10, 2016
    Style: Stud KitVerified Purchase
    I have a 2007 Dodge Ram 2500 with the 6.7L Cummins. Wish I had retrofitted to these studs years ago, but I didn't. Head gasket failed at around 98k miles. I hired a mobile diesel tech to come to my house and help me change the gasket and install the studs. Ended up getting a valve job too, so the upper end of the engine is like new. It was a lot of work! This mechanic torqued the nuts to 135 ft-lbs, which is 10 ft-lbs higher than Cummins does at the factory. He says that is a best practice that many mechanics are doing.

    For those who are replacing a failed head gasket, Cummins makes an Upper Engine Gasket Kit which has all the gaskets you'll need.
    6 people found this helpful
    Helpful
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    Connie Chapin
    4.0 out of 5 stars Looks to be a quality product
    Reviewed in the United States on January 27, 2021
    Style: Stud KitVerified Purchase
    Seems like a quality product. Already had the head off, so easy to install
    Helpful
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    Amazon Customer
    5.0 out of 5 stars and holds better! I was always hesitant with the more powerful ...
    Reviewed in the United States on November 28, 2016
    Style: Stud KitVerified Purchase
    The studs come with an instruction manual. I would suggest going to glacier diesel for a more in depth, step by step, manual (available as a PDF). As far as the studs are concerned; everything works as it should, and holds better! I was always hesitant with the more powerful tunes on my programmer. These studs brought me peace of mind. The head stays where it should be, and my coolant levels are good. It took me me the better part of a day to install.

    So in short, I recommend these for anyone looking for extra insurance when throwing more power at a 6.7.
    6 people found this helpful
    Helpful
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    brian heusinger
    5.0 out of 5 stars Excellent product.
    Reviewed in the United States on March 15, 2019
    Style: Stud KitVerified Purchase
    Excellent. As advertised. Have some mechanical sense and the install will go smoothly. Go slow, take you’re time. By all means I highly recommend getting a top side creeper. I bruised my chest pretty bad. Also, have a decent sized torque wrench. I have a 22” 1/2 inch and my arm was really tired after this.
    3 people found this helpful
    Helpful
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    Top reviews from other countries

    Alan
    5.0 out of 5 stars Expensive, but good quality
    Reviewed in Canada on September 19, 2023
    Style: Stud KitVerified Purchase
    Used on Cummins 6.7 2 years ago, no issues.
    Report
    SIPING WENG
    4.0 out of 5 stars it is a great product, very clear instruction and easy to install.
    Reviewed in Australia on February 24, 2023
    Style: Stud KitVerified Purchase
    very fast delivery from the seller. very detailed instruction and easy to follow. I installed them on my ISB4.5 engine which is a 4 cylinder engine. there is one nut missing from the package. Luckily , I don't have to use all the stud and nuts. hopefully someone in the packing take good care in the future. Since my engine is fully working, so I did not have to removed the factory bolts all together, so I installed ARP stud one by one and tighten it to 170nm in one go. After few thousands kms, I re-tighten them, but found they were all tight and wont move at all. excellent!
    Report
    Dave Beland
    5.0 out of 5 stars The parts no need
    Reviewed in Canada on November 6, 2021
    Style: Stud KitVerified Purchase
    Great product
    One person found this helpful
     Report
    Diesel Pirate
    5.0 out of 5 stars Do at least 1 cold retorque and then 2 hot on the Cummins
    Reviewed in Canada on September 6, 2019
    Style: Stud KitVerified Purchase
    Just did head gasket on 07 ram 6.7 408’000 km . Did 1 cold retorque followed by 2 hot retorques with 250 km between them . Working good !
    Report
    Mitchy
    5.0 out of 5 stars Exactly what you need
    Reviewed in Canada on June 7, 2019
    Style: Stud KitVerified Purchase
    Works perfect in my 2014 ram 3500. Holds 75psi of boost with my compounds. 60,000kms since i installed them and compounds and no problems
    3 people found this helpful
     Report