High Performance Bearing Kit (Standard OEM Berkeley)

Ultra Gold Roller Rocker Arms - Big Block Chevy 7/16" 1.7 Ratio  

When only the best will do demand what champion engine builders use.  When exacting tolerances relate to horsepower precision manufactured roller rocker arms deliver.  Reduced valve train weight matched to effortless smooth operation will result in up to 15 plus horsepower gains.  Simple installation and superior reliability make these a great cost effective horsepower gain. 

• More clearance for retainers & springs
• Needle Bearing Fulcrum and Roller Tip
• Centerless Ground Trunnion
• Burr Free Thru Hole in Trunnion
• Thick Walled Adjusting Nut
• Narrow Body Design 

E RING (Priced Each. Must be sold in quantities of 10) Mercruiser 53-MR21902T.

Supersedes: 53-823307
53-8233071
53-MR21901
53-MR21902

GASKET Mercruiser 27-8190242

Supersedes: 27-819024
27-8190241

GASKET Mercruiser 27-8190231

Supersedes: 27-819023

PLUG Mercruiser 19-19027

GROMMET Mercruiser 25-898101902

THERMOSWITCH Mercruiser 87-819022T01

Supersedes: 87-8190221

Supercedes: 87-8190221

Mercruiser Guide Tool 91-90244T

Supersedes: 91-90244

Supercedes: 91-90244

Puller / Driver Assembly 91-90244A1

Removes and installs the drive shaft housing bearings and sleeves on all the Bravo and Blackhawk drive units. Assembly includes the following:
91-90777T1 Puller Jaws
91-90774 Puller Guide
91-90775 Puller Bolt
91-90244T Driver Guide
91-90773T

COVER Mercruiser 190294