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ARP Rod Bolt Kit - Geo Storm/Isuzu Impulse/Lotus Elan M100

ARP® Rod Bolts are made of premium grade 8740 chrome moly steel and heat treated to a nominal tensile strength of 200,000 psi. Threads are rolled after heat treat to ensure optimum fatigue strength. They are far superior to OEM fasteners in terms of durability and service life—fully capable of handling the extra stress of high combustion pressure engines.
These are custom made specifically for us by ARP® and have a custom part number specifically for our company.

Fits the following:
1989-93 4XE1 1.6 liter DOHC Engines (International Market)
1990-93 4XE1 SOHC Engines (US Market)
1990-93 4XC1 SOHC Engines (Japanese Market)
1985-89 4XC1 SOHC Engines (International Market).

Designed specifically for the following vehicles with 4XE1 1.6 Liter DOHC Turbo and Non-Turbo Engine and 4XE1 1.6 liter SOHC Engine:
Isuzu Impulse XS and RS
Isuzu Stylus S and XS
Isuzu Gemini JT191F and JT191S
Isuzu Gemini JT151 ALL
Geo Storm GSi 1989-1991
Geo Storm Base 12 Valve SOHC ALL

This is a direct replacement for Isuzu PN 8-94362-688-0 and GM/Geo PN 94362688, for use with OEM connecting rods in 4XE1 and 4XC1 engines.

The 1985-89 4XE1 and 4XC1 engines use a different connecting rod bolt: Isuzu PN 8-94107-550-1, GM/Geo PN 94107550, and Lotus PN A100E6254S.  This bolt is identical in shaft diameter, knurl diameter, and thread, but is .076 inches shorter in length.  This replacement connecting rod bolt is interchangable for the earlier 4XE1 and 4XC1 engines:

Isuzu I-Mark 1.5 liter SOHC Non-Turbo
Isuzu I-Mark RS and LS 1.5 liter SOHC Turbo
Isuzu I-Mark RS 1.6 liter DOHC
Chevrolet Spectrum 1.5 liter SOHC Non-Turbo
Chevrolet Spectrum 1.5 liter SOHC Turbo
Asuna Sunburst 1.5 liter SOHC Non-Turbo
Asuna Sunburst 1.5 liter SOHC Turbo
Isuzu Gemini JT150 1.5 liter SOHC Non-Turbo
Isuzu Gemini JT150 1.5 liter SOHC Turbo
Isuzu Gemini JT190 1.6 liter DOHC
Lotus Elan M100 ALL

Torque Specifications:
1.6L 1990 SOHC/DOHC 36 ft. lbs.

1.6L 1991+ SOHC/DOHC:
Step 1 11 ft. lbs.
Step 2 Tighten bolts an additional 45 to 60 degrees

The Rod bolt torque specifications are stock because of the rotating assembly that they hold together, you don't want to oval the assembly.

$160 USD

Prices are for lower 48 US only unless otherwise noted.
Please email for International shipping quote.

Geo Storm isuzu impulse performance parts