Fits all 1750, 2000 and twin spark Carrillo Rods and most look alike H-beam imitations Rods. The strength of CARR bolts exceeds any other bolt (see chart). These are a must for all high performance engines. The weak kink in any rod is the bolts and using CARR bolts is the best insurance. You can buy for your engine investment. All immitations should be upgraded to either CARR or WMC. If your rod bolts do not have WMC or CARR stampled in the head, they are cheap chinese look alikes with inferior bolts that fo "BANG" at some point.

ROD BOLT CHART 3/8?

BOLT TYPE                   ALLOY                              RATING               COMMENTS

Carrillo CARR     Carrillo proprietary stainless      285-300,000 #     actual yield strength is greater than this rating

Carrillo WMC     High grade of H-11 tool steel     220-240,000 #    actual yield strength is greater than this rating

ARP L19            Medium grade H-11 tool steel    265/275,000#     actual yield strength range

ARP 2000          Low grade of H-11 tool steel      220/230,000#     actual yield strength range

CHINESE          Some kind of steel                        unknown            they claim to be ARP

New Carrillo Rods and Bolts are laser engraved ? Carrillo.?

Before Carrillo rods were counterfeited they were not marked with logo.

All earlier Carrillo rod bolts have identification stamped in the head area.

ARP Bolts have stamped ID

Chinese Bolts are blank