Upgrade to 5150's Custom Age 625+ Head Stud Kit Built by ARP!
N55 Engines must be drilled & tapped for proper installation
Upgrade to 5150's Custom Age 625+ Head Stud Kit Built by ARP!
N55 Engines must be drilled & tapped for proper installation
Ditch the Stock Head Bolts for a Set of Head Studs from ARP!
Offers great strength and fatigue resistanve vs stock bolts, increasing clamping strength and preventing cylinder head lift and damage.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
09-09-2026
Direct-fit, plug-and-play catch can kit for N20 engines. Keep your engine clean & free of oil deposits.
Crucial Mod for any Camshaft Upgrade!
2X Entries Into Our F80 M3 Sweepstakes
Two required per valve, necessary for use with certain supertech valves
This product was last offered at the strikethrough price on
08-13-2026
Upgraded Head Gasket For Gen 1 B58!
For Gen 1 B58 Cars
This product was last offered at the strikethrough price on
05-06-2026
Quality retainers from Supertech
Quality retainers from Supertech
M7X68MM
This product was last offered at the strikethrough price on
07-06-2026
Quality retainers from Supertech
Two required per valve, necessary for use with certain supertech valves
For repair or changing valves in the cylinder head