Product Description

CPP Extreme Duty NV4500 Transmission for 1994–2003 Dodge Ram 2500/3500

• Built for heavy towing & tuned Cummins power
• Hardened gears and precision-set clearances
• Optional 1-3/8" (1.375") input shaft for HD clutches
• Direct fit for 1994–2003 Ram 2500/3500 (2WD/4WD)
• 3-year, unlimited-miles craftsmanship warranty

Built to work. CPP’s Extreme Duty NV4500 is engineered for high torque, frequent towing, and real-world mileage. Each unit is carefully assembled with upgraded, wear-resistant components, set to tight tolerances, and road-tested for shift quality before it leaves our shop.

Why This NV4500 Beats “Reman Basic”

• Hardened gears & wear items chosen for diesel torque and load.
• 1-3/8" input option: step up to stronger spline engagement and pair with heavy-duty clutches.
• Fitment dialed: We match your year, 2WD/4WD, and top cover style (square/round) to ensure a direct swap.
• Quality you can prove: Documented build sheet and end-of-line checks (gear wear, shaft runout, shift quality).
• Real warranty: 3-year, unlimited-miles craftsmanship coverage from CPP.

Vehicle Fitment

Designed for 1994–2003 Dodge Ram 2500/3500 equipped with the NV4500 manual transmission. Choose your year range, drivetrain (2WD/4WD), and top cover type (square or round) from the options.

What’s Included

• Fully built NV4500 Extreme Duty transmission
• Shift tower/top cover matched to your selection
• Fill & break-in guide
• Core return instructions

Recommended Supporting Parts

Protect your investment and unlock the full benefit of the build:

• Heavy-duty clutch (Valair or South Bend) sized for the 1-3/8" input if you select that option. (Shop clutches)
• Correct manual transmission fluid (NV4500-spec synthetic, see FAQ). (Shop fluid)
• Pilot bearing, hydraulics (master/slave), and—if required—an appropriate starter spacer. (Shop hydraulics & accessories)

Compare Your Options

Options & Specs

• Input shaft: Stock or 1-3/8" (1.375") upgrade for HD clutch compatibility.
• Top cover: Select square or round to match your original shifter.
• Drivetrain: 2WD or 4WD configurations available.

Shipping & Core

We offer flexible freight options and core handling. Choose to ship your core first or add a refundable core charge to speed up delivery. Core return instructions are included.

CPP Build Sheet & QC (What We Check)

• Case inspection & thread repair as needed
• Mainshaft/countershaft runout measurement
• Gear wear pattern & endplay verification
• Synchro, bearing, and seal replacements to spec
• Shift quality test (all gears) and leak check
• Final torque, fastener, and top cover verification

NV4500 Frequently Asked Questions

What fluid does the NV4500 use and how much?

What’s the benefit of the 1-3/8" input shaft upgrade?

How much torque can an NV4500 handle?

Are there year/spline differences I should know?

Is this a direct swap for my 1994–2003 Ram?

Popular Add-Ons

• South Bend & Valair HD Clutches
• NV4500-Approved Fluid
• Hydraulics & Pilot Bearings
• Starter Spacer & Related
• NV4500 Seals, 5th Gear, Bearings