ARP

ARP 247-4202 1998.5-2021 DODGE RAM 5.9/6.7L CUMMINS 24V


$442.99

  • PART #: ARP247-4202

ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration! Following heat-treat, 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. 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 (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.

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Head Studs vs Bolts:

On many street-driven vehicles, where master cylinders and other items protrude into the engine compartment, it’s probably necessary to use head bolts so that the cylinder heads can be removed with the engine in the car. For most applications, however, studs are recommended. And for good reason. Using studs will make it much easier to assemble an engine (especially a racing powerplant which must be serviced frequently and quickly!) with the cylinder head and gasket assured of proper alignment. Studs also provide more accurate and consistent torque loading. Here’s why. When you use bolts to secure the head, the fastener is actually being “twisted” while it’s being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A stud should be installed in a “relaxed” mode – never crank it in tightly using a jammed nut. If everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Remember, an undercut shorter stud will have a rate similar to a longer, standard shank stud. This provides a more even clamping force on the head. Because the head gasket will compress upon initial torquing, make sure studs and bolts are re-torqued after the engine has been run.

Brand ARP
Shipping Weight 8.7 lb.
Shipping Width 7.6 in.
Shipping Length 11.5 in.
Shipping Height 2.5 in.
Prop 65 WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
Year Make Model Engine
1998.5 Cummins 2500 Cummins 5.9L
1998.5 Cummins 3500 Cummins 5.9L
1999 Cummins 2500 Cummins 5.9L
1999 Cummins 3500 Cummins 5.9L
2000 Cummins 2500 Cummins 5.9L
2000 Cummins 3500 Cummins 5.9L
2001 Cummins 2500 Cummins 5.9L
2001 Cummins 3500 Cummins 5.9L
2002 Cummins 2500 Cummins 5.9L
2002 Cummins 3500 Cummins 5.9L
2003 Cummins 2500 Cummins 5.9L
2003 Cummins 3500 Cummins 5.9L
2004 Cummins 2500 Cummins 5.9L
2004 Cummins 3500 Cummins 5.9L
2004.5 Cummins 2500 Cummins 5.9L
2004.5 Cummins 3500 Cummins 5.9L
2005 Cummins 2500 Cummins 5.9L
2005 Cummins 3500 Cummins 5.9L
2006 Cummins 2500 Cummins 5.9L
2006 Cummins 3500 Cummins 5.9L
2007 Cummins 2500 Cummins 5.9L
2007 Cummins 3500 Cummins 5.9L
2007.5 Cummins 2500 Cummins 6.7L
2007.5 Cummins 3500 Cummins 6.7L
2008 Cummins 2500 Cummins 6.7L
2008 Cummins 3500 Cummins 6.7L
Year Make Model Engine
2009 Cummins 2500 Cummins 6.7L
2009 Cummins 3500 Cummins 6.7L
2010 Cummins 2500 Cummins 6.7L
2010 Cummins 3500 Cummins 6.7L
2011 Cummins 2500 Cummins 6.7L
2011 Cummins 3500 Cummins 6.7L
2012 Cummins 2500 Cummins 6.7L
2012 Cummins 3500 Cummins 6.7L
2013 Cummins 2500 Cummins 6.7L
2013 Cummins 3500 Cummins 6.7L
2014 Cummins 2500 Cummins 6.7L
2014 Cummins 3500 Cummins 6.7L
2015 Cummins 2500 Cummins 6.7L
2015 Cummins 3500 Cummins 6.7L
2016 Cummins 2500 Cummins 6.7L
2016 Cummins 3500 Cummins 6.7L
2017 Cummins 2500 Cummins 6.7L
2017 Cummins 3500 Cummins 6.7L
2018 Cummins 2500 Cummins 6.7L
2018 Cummins 3500 Cummins 6.7L
2019 Cummins 2500 Cummins 6.7L
2019 Cummins 3500 Cummins 6.7L
2020 Cummins 2500 Cummins 6.7L
2020 Cummins 3500 Cummins 6.7L
2021 Cummins 2500 Cummins 6.7L
2021 Cummins 3500 Cummins 6.7L

Diesel Dudes LLC is fueled by solid communication and proven performance in building diesel engines and trucks - honestly and expertly in Seattle.

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