Fitment:
Fits for all GM LS series engines. Will not work with passenger side mounted alternator bracket kits

Features
- Both fittings are vertically tapped 1/8 NPT. Bolts are Socket Cap M6-12
- Made of aircraft grade 6061 billet aluminum for strength, durability, and longevity; coated with silver oxide finish for resistance to rust and corrosion
- (2) Coolant Ports, (2) O-rings, (2) Bolts Can be installed on the front or rear of heads
- Fits LS Engines. Works on LS1 LS2 LS3 5.3 6.0 LM7 LQ4
- 1/8" NPT threaded holes to crossover steam/coolant from cylinder heads. Can be installed on the front or rear of heads

Note:
Will not work with passenger side mounted alternator bracket kits
These do NOT have holes for crossover tube attachment