Pro Series ARP2000 Complete Rod Bolt Kit for BMW 2.5L (M50/M50TU) inline 6 M9 x 53mm UHL

Pro Series ARP2000 Complete Rod Bolt Kit for BMW 2.5L (M50/M50TU) inline 6 M9 x 53mm UHLBecause factory connecting rods (or aftermarket versions of OEM rods) are used in a variety of applications from rebuilt stock motors to modified powerplants used in circle track, marine and drag racing engines including those with superchargers and or nitrous oxide injection systems ARP offers replacement rod bolts in three different models. All of them are substantially better than the stock OEM and most aftermarket bolts. For the most severe

including the elimination of main cap walk and fretting

drive toolMade from heat-treated 8740 chrome moly steel withheavy-duty black oxide finish

which gives themabout 2000% (that’s twenty times) better fatigue strength thanthose studs that are threaded prior to heat-treat (a very commonindustry practice)

To be used with ARP’s patentedPerma-Loc™ adjusters

Comes with a heavy-duty

Hardened parallel-ground washers are included in each kit

Alternators that come loose are a pain

with most of them also offered in handy 2-piece and 10-piece packages

A true high performance washer from ARP

ARP’s Pro Series rocker arm studs are made of premium grade 8740 chrome moly steel and heat-treated to a tensile strength of 190

000 psi forthe 8740 material and 220

000 psi and High Performance Series that are rated at 180