No hassle
returns
Live in-stock
inventory
Save over
60% retail
You have no items in your shopping cart.
June Sale: $870.03
In Stock
May ship from manufacturer
Free Shipping
Part number: 204-5407
Competitor Pricing
Product Details
ARP 204-5407 Cylinder Head Fasteners
Crankcase Thru Bolt Kit

Main Studs
There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel-ground washers and high quality nuts. Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in place. The studs are manufactured from 8740 chrome moly steel, heat-treated in-house to 200,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others.

Main Bolts
Far superior to any other main bolt kit offered for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly, all bolts feature generous under-head radius and rolled threads for the utmost reliability. The threads are rolled after heat-treating, which makes them about 1000% longer fatigue life than most main bolts, which are threaded prior to heat-treating. Available in the popular High Performance Series, which, at a nominal rating of 180,000 psi, is a premium replacement for OEM fasteners, or the 200,000 psi nominal rated Pro Series, application-specific main bolts with reduced wrenching head and are designed for use in competition applications. Parallel-ground, hardened washers are included with each kit.

Reviews
Add your review
V
hope everything makes it here before saturday. lol
L
Happy with the purchase! The lowest price and fast shipment.
N
Best price online for an Injen intake. Arrived in a week. Appreciated the "Item shipped" email with tracking number!
A
I ordered a water pump from them and that Amazon was advertising as a Chrome pump. When I discovered it was not chrome, I asked to cancel the order which was prior to shipping notification. I was told by customer service it had already been sent and I would have to wait until the item was sent for a return to be processed. The return was sent back and all money was credited to my account as promised.
Fitment
Porsche 911
1977 Porsche 911 ALL
1976 Porsche 911 ALL
1975 Porsche 911 ALL
1974 Porsche 911 ALL
1973 Porsche 911 ALL
1972 Porsche 911 ALL
1971 Porsche 911 ALL
1970 Porsche 911 ALL
1969 Porsche 911 ALL
1968 Porsche 911 ALL
1967 Porsche 911 ALL
1966 Porsche 911 ALL
1965 Porsche 911 ALL
Return Policy
Returns are easy at THMotorsports
Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy