HEATING AND AIR CONDITIONING — 1998.5–2002 DODGE RAM 5.9L CUMMINS (24-VALVE, VP44)

Bring your late 2nd-Gen’s HVAC back to factory comfort. CPP Diesel stocks blower motors, resistors & pigtails, blend/heater door actuators, and A/C hard parts (compressors, accumulators, lines, orifice tubes) selected to fit the 1998.5–2002 Ram 2500/3500 5.9L 24-valve.

Shop by Subcategory

• Blower Motors — OE-quality airflow: Mopar 5015866AA.
• Blower Resistors & Pigtails — Fix “only one fan speed” issues: Dorman 973-020, 973-421 kit w/ pigtail.
• Blend / Heater Door Actuators — Temperature & mode control: Dorman 604-018 (main, 98.5–02), Mopar 05104879AA.
• A/C Compressors & Switch Pigtails — A/C Compressor category (98.5–02) • CPP 55036561 compressor (94–05) • Mopar 05017117AA pigtail.
• Accumulators, Lines & Orifice Tubes — GPD 1411266 accumulator, GPD 4811584 liquid line, GPD 3411252 orifice tube.
• Heater Core Tube / Hose Assembly — CPP Heater Core Tube Assembly (98.5–02) .

Featured 98.5–02 Picks

• Mopar 5015866AA Blower Motor — OE fit and quiet operation.
• Dorman 973-020 Resistor or 973-421 kit — restore all fan speeds.
• Dorman 604-018 Blend Door Actuator — corrects hot/cold mixing and vent mode issues.
• A/C Compressors (98.5–02) — replacements including CPP 55036561 (94–05).
• GPD 1411266 Accumulator & Liquid Line — refresh the low-side and charge path.
• CPP Heater Core Tube Assembly — molded, direct-fit repair for common leaks.

Why Buy from CPP Diesel

• 2nd-Gen Focus: Parts vetted on 1998.5–2002 Rams for fitment and wiring/connectors.
• Top Brands + CPP: Mopar & Dorman replacements, GPD A/C hardware, plus CPP-branded solutions.
• One-Cart Refresh: From blower circuits to A/C hard parts, everything needed for a reliable fix.
• Fast Shipping: Popular HVAC items ship quickly from U.S. warehouses.

Also see COOLING SYSTEM for coolant-side service parts and HEAT CONTROL PRODUCTS to manage under-hood temps.

Helpful Notes

• No/limited fan speeds: Replace the resistor (and pigtail if overheated) before condemning the motor.
• Only hot or only cold air: Diagnose/replace the blend door actuator (98.5–02 main: Dorman 604-018).
• Compressor swap: Always install a new accumulator/drier and verify orifice/expansion component & oil charge.
• Heater leaks/odor: Inspect heater core tubes/hoses and fittings—use the molded CPP tube assembly for clean repairs.

Frequently Asked Questions

My fan only works on high—what should I replace?

Start with the blower resistor (973-020). If the connector is heat-damaged, use the 973-421 kit.

How do I fix “stuck on hot” or wrong vent mode?

Replace the blend/heater door actuator—see Dorman 604-018 (main) or Mopar 05104879AA.

What should I replace with a new A/C compressor?

Install a fresh accumulator, verify the orifice/expansion component, and add the correct oil/refrigerant by spec.

Do you carry the heater core tube/hose for late 2nd-Gen?

Yes—our molded CPP Heater Core Tube Assembly is a direct-fit solution.

Where can I find all HVAC parts for 98.5–02 in one place?

Browse the dedicated HEATING AND AIR CONDITIONING (98.5–02) category for the full lineup.