Manton 12v Cummins Adjusting Screw
12 needed per set.
Fits 1989-1998 5.9L 12V Cummins
Enhance your 1989-1998 5.9L 12V Cummins with Nitrided Billet Tool Steel Adjusting Screws.
These screws are made from H-13 tool steel, heat treated, triple tempered, and nitrided for durability.
Manufactured with rolled threads and broached for Allen wrench compatibility.
Custom screws available with oil holes or oil grooves upon request.
Stock rocker arm setup uses part number D-828 with stock length, thread pitch, and ball radius.
Proper installation crucial; deviations affect rocker arm ratio and valve lift.
Pre-lubricate with high zinc assembly oil to prevent galling during initial start-up.
Pair with lightweight 12-point poly lock jam nuts for optimal performance.
For D-828 screws, consider our D-851 jam nut for best results.
For further assistance, call (951)245-6565.
Andrew –
I ordered 3 and I have to say I really like the look and quality of these set screws. I will note that I thought I was buying 6 due to the picture showing two. I had made a call to office and found out that it was 25$ for one adjustment screw not two. Please change the picture to a single adjustment screw so others do not get confused. Thank you.