Nitro Gear & Axle 8.8" 3.9 Ring & Pinion
Ford 8.8" 3.90 Nitro Ring & Pinion
Nitro gears are manufactured from 8620 steel gear forgings in the same manufacturing facilities as GM, Dodge, Ford & Toyota. They are precision machined using computer controlled processes, heat treated, CNC triple-lapped and Rockwell tested for hardness. These extra steps ensure excellent fitment, ideal contact pattern and smooth, quiet operation.
Differential: Ford 8.8"
Gear Ratio: 3.90
Tooth Count: 43/11
Pinion Splines: 30
Ring Gear Bolts: 10 (not included)
Manufacturer: Nitro Gear & Axle
Warranty: 2 Years
1983-2009 Ford F150
1983-1996 Ford Bronco
1983-2008 Ford E150 Van
1990-2009 Ford Explorer
1997-Newer Ford Expedition
1989-2009 Ford Ranger
1986-2008 Ford Mustang
1994-2008 Mazda B4000
1979-1986 Ford LTD
1992-1998 Ford Crown Victoria
1987-1988 Ford Thunderbird Turbo Coupe
1989-1997 Ford Thunderbird SC MN12 IRS
1994-1997 Ford Thunderbird MN12 with 4.6L V8 IRS
1986-1988 Mercury Cougar XR7 & V8 Models
1989-1997 Mercury Cougar XR7 MN12 IRS
1991-1997 Mercury Cougar MN12 with V8 IRS
1984-1992 Lincoln Continental Mark VII
1993-1998 Lincoln Mark VIII IRS
1980-2002 Lincoln Continental
1981-2007 Lincoln Town Car
1979-1986 Mercury Marquis
1983-2008 Mercury Grand Marquis
2003-2004 Merury Marauder
*All Nitro Gear & Axle brand products are warrantied to be free of manufacturer defects for the specified period. Warranty requests must be made by the original purchaser and submitted by the dealer purchased from. Any parts sent for warranty consideration must be pre-approved and shipped prepaid freight to our facility with copy of RGA for our inspection & determination. We will not pay for labor, shipping cost, loss of revenue or perishable goods, commercial losses, costs of telephone calls, shipping or general inconvenience. This is our only warranty expressed or implied. Unauthorized warranty returns may be refused. Warranty generally covers MFG defects in material or workmanship. Abuse, overloading, improper lubrication, misuse, commercial or competition use voids warranty. Normal characteristics are not warrantable, such as Gear whine. Minor cosmetic flaws, dings, burrs from shipping or manufacturing, are not considered defect, it is installer responsibility to address these at time of install. Customer is responsible for shipping charges if warranty is granted. Warranty is for the original purchaser/user, is not transferable. Warranty covers one replacement or credit solely at our discretion. Warranty determinations are at our sole discretion.
In addition to the above conditions, see special notes for these products:
Ring & Pinion - Warrantied against manufacturing defects. 2 years from date of purchase. Must provide set-up specs.
Chromoly front Axles, Excalibur Joints, 30/30 Birfield kits - Warrantied against manufacturing defects for the life of the vehicle. These products are also covered for Breakage. The Shaft / joint must be BROKEN. Wear, twisting, bending are not warrantable. Damages caused by failure of other parts are not warrantable, for example broken U-joint (other than Nitro Excalibur) causing damage to Axle ears.
Rear Chromoly Axles - Warrantied against manufacturing defects for 5 years. These products are also covered for Breakage. The Shaft must be BROKEN. Worn, twisted, or bent axles are not warrantable.
Box Weight: 18 lb
Box Dimensions: 1 x 1 x 1 in