NGK RC-CRX056 53020 Spark Plug Wire Set Dodge Ram 1500/2500/3500 Durango 5.7L

Vehicle Fitment

• 2003-2005 Dodge Ram 1500 (ST, SLT, SXT, Laramie, 5.7L V8 Hemi, 2WD/4WD)
• 2003-2005 Dodge Ram 2500 (ST, SLT, SXT, Laramie, 5.7L V8 Hemi, 2WD/4WD)
• 2003-2005 Dodge Ram 3500 (ST, SLT, SXT, Laramie, 5.7L V8 Hemi, 2WD/4WD)
• 2004-2005 Dodge Durango (ST, SLT, SXT, Limited, 5.7L V8 Hemi, 2WD/4WD)

Fitment Notes

• Fits the 5.7L Hemi V8 with twin spark (Multi-Displacement System / MDS) ignition only - does not fit 3.7L V6, 4.7L V8, or 5.9L Magnum V8 applications in the same vehicle families.
• The 5.7L Hemi uses a dual-plug-per-cylinder twin spark ignition system with 16 total spark plugs. This wire set covers 8 secondary plug wires only; the remaining 8 plugs are served by coil-on-plug (COP) direct ignition and do not require wires.
• Coil lead is not included (N/R); the existing coil lead should be reused or sourced separately.
• Wire set is vehicle-specific - not universal fit. Wires are pre-cut to OEM lengths for each cylinder position.
• Wires are numbered for easy cylinder identification.

Features

• High-temperature silicone outer jacket withstands underhood temperatures up to 250°C (482°F) without cracking or degrading in the heat-intensive Hemi engine bay.
• Variable pitch ferro-magnetic core winding scrambles and suppresses EMI/RFI electrical interference across a wide frequency range, protecting Hemi electronics and MDS sensors.
• Ultra-low resistance ferro-mag core delivers approximately half the resistance of conventional carbon core wires (8k ohm/m vs. 16k ohm/m) for a stronger, more consistent spark.
• High-density fiberglass braiding over EPDM/silicone inner insulation provides superior dielectric strength and tensile resistance against pull-out damage.
• Positive-locking corrosion-resistant stainless steel terminal ends with up to 3 serrated crimps for maximum vibration and separation resistance.
• Silicone-sealed spark plug boots provide a watertight seal at each plug connection, preventing moisture intrusion and corrosion.
• Custom application-specific terminal boots deliver exact OEM fit - not generic universal boots.
• Backed by NGK's Lifetime Warranty.

Specifications

• NGK Part Number: RC-CRX056 (also listed as CRX056)
• NGK Stock Number: 53020
• Product Type: Spark Plug Wire Set
• Core Material: Ferro-Magnetic (Ferro Mag)
• Jacket Material: Silicone
• Jacket Color: Blue
• Wire Outer Diameter: 7mm
• Wire Count: 8 Wires (Coil Lead Not Included)
• Noise Suppression: Yes (EMI/RFI)
• Fit Type: Vehicle-Specific (Not Universal)
• Warranty: Lifetime

Included Components

• 1x Complete 8-Wire Spark Plug Wire Set (NGK RC-CRX056) - pre-numbered for cylinder identification; coil lead not included

Product Description

The NGK RC-CRX056 (Stock No. 53020) is a direct-fit spark plug wire set engineered specifically for Dodge's 5.7L Hemi V8 twin spark ignition system as used in the 2003-2005 Ram 1500, Ram 2500, Ram 3500, and 2004-2005 Durango. The 5.7L Hemi uses a dual-plug-per-cylinder design with 16 total spark plugs - 8 are fired by coil-on-plug (COP) units that require no wires, while the remaining 8 secondary plugs are connected via this wire set. This makes the RC-CRX056 a Hemi-specific product; using a standard 8-cylinder wire set on this engine will result in misfire and incomplete spark coverage.

Constructed with a ferro-magnetic variable pitch core, blue silicone jacket, and application-specific boots pre-terminated to OEM lengths, this set installs without modification and restores factory ignition performance. The ultra-low resistance core and broad-spectrum EMI/RFI suppression protect the Hemi's complex engine management and MDS (cylinder deactivation) electronics from ignition-generated interference. Backed by NGK's Lifetime Warranty, the RC-CRX056 delivers a reliable, long-term improvement over worn OEM wires.