55-64 GM 55P Pass Power Lock Posi 3.73-Down Nitro Gear and Axle

Nitro Gear and Axle strives to provide the highest quality differential components available. We take the steps necessary to ensure our parts are dependable. Our product range is continually growing to meet the needs of consumers for new ratios and applications. At Nitro we know differentials, and know what it takes to provide you with high quality components.
Details:

• GM 55P, 55-64 GM Passenger, 17 Spline, 3.73-Down (3.91 Thick Gear), Nitro Power Lock Posi Unit
• Ultimate Traction From A Limited Slip Differential
• Highest Quality CNC Machined and Heat Treated Components
• Differential: GM 55P
• Gear Ratio: 3.73-Down
• Axle Splines: 17
• Ring Gear Bolts: 10 (Not Included)
• Material: Cast Iron
• Manufacturer: Nitro Gear and Axle
• Assembled In The U.S.A.
• Warranty: 1 Year
• Sold As Each

Tech Note:

• Requires Positraction Additive which can be purchased separately.

Fits Vehicles:

• 1958-1964 Chevy Impala
• 1958-1964 Chevy Biscayne
• 1955-1964 Chevy Bel Air
• 1955-1964 Chevy Nomad
• 1956-1962 Chevy Corvette