Brand: World American
GEAR MAINSHAFT 6610, 6613
California Proposition 65: Cancer and Reproductive Harm – www.P65Warnings.ca.gov
Spline Quantity: 20
Taxonomy A: HD Manual Transmission
Taxonomy B: Shafts
Taxonomy C: Mainshafts & Gears
Tooth Quantity: 36

Warranty Period: 1 Year or 100,000 Miles

Replaces:

• Mack: 3088-21670
• Navistar: FUL21670
• Genuine Newstar: FUR-21670
• Rockwell International: M1321670
• Genuine Newstar: S-B283
• Genuine Newstar: SB283