Harland Sharp D-Force Roller Rocker Arms are manufactured in-house ensure maximum strength and durability for your GM Valvetrain The D-Force roller rocker arms also
feature a roller tip for superior friction reduction and increased
use in racing applications, and with no required modifications, the
D-Force roller rocker arms from Harland Sharp truly are the simplest way
of maximizing your diesel engines valvetrain performance!
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Most Popular Questions
Are these 1.6:1 ratio?
View Staff Answer
The Harland Sharp Roller Rocker Arms 6.5L GM Diesel are sold on the site as a stock ratio, but if you're looking for an increased ratio call us at 1-888- DIESEL-4 and we can special order them for you.