A-Premium A/C Suction & Discharge Hose Assembly for Dodge Ram 2500/3500/4000 5.9L OHV Diesel — Direct-Fit, 4-Layer Reinforced

High-strength A/C suction and discharge hose assembly engineered to replace worn lines on 2003–2005 Dodge Ram 2500/3500 and Ram 4000 5.9L OHV diesel models.

This A-Premium hose assembly is a direct-fit replacement set designed for diesel-powered Dodge Ram 2500 (2003–2005), Ram 3500 (2003–2005) and Ram 4000 (2005) trucks with the 5.9L OHV engine. It includes both the low-pressure suction line and the high-pressure discharge line, built with a multilayer construction to withstand heat, abrasion and the pressure cycles typical in truck HVAC systems. The part matches common OEM reference numbers and comes with a one-year unlimited-mileage warranty from A-Premium.

Will this hose assembly fit my Dodge Ram 5.9L diesel?

Yes — the assembly is sized for specific years and engine types. Confirm your truck is a diesel Ram with the 5.9L OHV engine and one of these model years: Ram 2500 (2003–2005), Ram 3500 (2003–2005) or Ram 4000 (2005).

• Fits Diesel models only — not gasoline variants.
• Compatible with L6 5.9L OHV engines in listed years and trims (including Laramie where specified).
• Matches OEM/reference numbers: HA10978C, 34-63898, 3463898, 4811798, 5179828AA, T56817.

How durable and reliable are these hoses under heavy-duty use?

The hoses feature a four-layer construction that resists collapse, abrasion and temperature extremes typical of truck engine bays. This construction helps maintain consistent refrigerant flow and reduces the risk of premature failure under heavy-duty or high-mileage use.

• Four-layer reinforced design for increased strength and burst resistance.
• Engineered for a wide operating temperature range in harsh conditions.
• OEM-style fittings and bends for secure, leak-minimizing connections.

What does installation involve and will it restore A/C performance?

Installation replaces the suction (low pressure) and discharge (high pressure) lines between compressor, evaporator and condenser. When properly installed and combined with a leak-free system and correct refrigerant charge, these new lines help restore the HVAC system’s ability to cool effectively by eliminating degraded or leaking hoses.

• Direct-fit design reduces the need for modifications or custom routing.
• Use with proper O-rings, fittings and refrigerant service procedures for best results.
• Professional installation recommended if you lack HVAC tooling or experience.

What warranty and quality assurances does A-Premium provide?

A-Premium backs this A/C hose assembly with a one-year unlimited-mileage guarantee, reflecting confidence in the part’s manufacturing and fit. The product is presented as a high-quality aftermarket replacement, meeting common reference numbers to aid compatibility checks.

• One-year unlimited-mileage warranty included.
• Manufactured to match common OEM reference numbers for ease of replacement.
• Sold as an aftermarket assembly to restore HVAC reliability and serviceability.

Who is this for? This hose assembly is aimed at owners and technicians working on Dodge Ram 2500/3500 and Ram 4000 trucks from the early 2000s with the 5.9L OHV diesel engine who need a reliable, direct-fit replacement for aging or leaking A/C lines. It’s appropriate for fleet maintenance, performance-minded owners restoring climate control function, and repair shops seeking a cost-effective, warranty-backed aftermarket option. Confirm your vehicle’s year, engine type and diesel fuel requirement before purchase to ensure proper fitment.