Arp 146 (known as PGC 509 and PGC 510) are a pair of interacting galaxies located 1.05 billion light-years away from Earth in the Cetus constellation. [1] [2] [3] It was discovered by Dewhirst and catalogued by Boris Vorontsov-Velyaminov as VV 790. [4]

Fits engines with a 4.0L cylinder head. Kit contains bolts that are 2 different lengths. ARP High Performance Series head bolt kits are tough. They are rated at 180,000 psi--15 percent stronger than Grade 8 fasteners.

ARP Main Stud Kits 146-5401 ARP-146-5401. 5 out of 5 stars. Part Number: ARP-146-5401. Estimated Ship Date: Monday 7/1/2024

Get the Best Performance with ARP High Performance Head Bolt Kit Jeep 4.0L Inline 6 with 1/2" Bolts 146-3601 parts at JEGS. Shop Now at the Guaranteed Lowest Price!

Head Bolt Kit Jeep 4.0L (242 cid) Inline 6, 1/2˝, two lengths Kit #: 146-3601 . Specifications; Socket Size(s) 9/16 hex: Jobber Price*: $94.93000000000001. Kit Instructions (opens in a ... Please check with your ARP dealer for actual pricing. ...

ARP High Performance Series head bolt kits are tough. They are rated at 180,000 psi--15 percent stronger than Grade 8 fasteners. They come available with a reduced wrenching hex head or 12-point head that help eliminate the need for valvetrain removal when re-torqueing cylinder heads. (order, shipping, returns, protection plans, etc.).