Mercruiser 7.4L Bravo 7.4LX Bravo V8 Exhaust Manifold & riser package set elbow

Description

GLM Manifolds are Superior in the Aftermarket Marine Parts Industry.
Designed to Increase Performance, Reduce Back Pressure
and Add More Horsepower to Your Engine!
Our fully tuned design guides exhaust gases directly to riser without turbulence and back pressure. This increases the engines performance up to 10%. In the meantime, an additional 40% water cooling area will decrease the entire manifold body temperature significantly
This listing is for two (2) exhaust manifolds and two (2) 4" 7° risers (elbows) for Mercruiser MODEL 330-370, V8 (B.B.), GM 454/502 CID (1981 up to 0M SN#’s) with raw/fresh water cooling systems without spacers. P/N (2) 51240 (GL51240)+(2) 51140 (GL51140); equivalent to the contents in GLM part number 58242 (GL58242.) **NOT FOR DRY JOINT EXHAUST**
This manifold kit contains (2) exhaust manifolds, (2) 4" risers (elbows), and FULL manufacturer's 3-year warranty. This manifold set can improve the performance of your stock engine and improve fuel efficiency at the same time. Kit contents are listed below:
(2) 51140 - Exhaust Elbows - OEM #807988A2
(2) 51240 - Exhaust Manifolds - OEM #807078A6
(2) 30240 - Elbow Gaskets - OEM #27-863724
(2) 33760 - Manifold Gaskets - OEM #27-46820
(8) 22381 - Screws - OEM #10-43749
(2) 13990 - Hose Fittings w/drain plug kit