Part #: 3048

Denso 3048 Spark Plug

U-Groove Conventional
9 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
U-Groove Conventional
Fitment: Dodge, Plymouth, and Mitsubishi, Conquest, Starion, and Colt
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Overview of the Denso 3048 Spark Plug

The Denso 3048 spark plug is engineered for reliable ignition performance in select Dodge, Mitsubishi, and Plymouth vehicles. Designed with a U-groove ground electrode tip, this spark plug supports efficient combustion and consistent engine operation.

  • U-groove ground electrode tip design for improved spark exposure
  • Nickel ground and center electrode tips with copper core for durability and conductivity
  • Standard ground configuration with a single ground electrode
  • Flat seat type with 14.00 mm thread diameter and 19.00 mm reach
  • Pre-gap size of 1.0 mm and manufacturer heat range of 20
  • Hex size of 20.6 mm for installation compatibility
  • Resistance rating of 5000 ohms to reduce electrical interference

Detailed Product Description

The Denso 3048 spark plug belongs to the U-Groove Conventional product line, which features a unique U-groove ground electrode tip design. This design increases the spark exposure area, promoting better ignition and combustion efficiency. The spark plug’s center electrode is constructed with a copper core for excellent thermal conductivity, while the nickel tip enhances wear resistance. The ground electrode also uses nickel material, ensuring durability under high-temperature conditions. With a flat seat and a thread diameter of 14.00 mm, this spark plug is engineered to fit specific engine configurations precisely.

Compatible Vehicles and Applications

This spark plug is compatible with various models from Dodge, Mitsubishi, and Plymouth, including the Dodge Colt, Mitsubishi Conquest, and Plymouth Starion. The Denso 3048 is designed to meet the ignition requirements of these vehicles, ensuring proper fitment and performance.

  • Improves ignition reliability in Dodge Colt, Mitsubishi Conquest, and Plymouth Starion
  • Helps reduce misfires and rough idling
  • Supports consistent engine starting and acceleration
  • Maintains optimal combustion efficiency
  • Reduces electrical interference with 5000 ohm resistance

Installation Notes and Tips

When installing the Denso 3048 spark plug, ensure the pre-gap size of 1.0 mm is maintained for optimal spark performance. Use a 20.6 mm hex socket for proper tightening torque. The flat seat design requires careful seating to avoid leaks or misalignment. Always verify thread engagement and avoid cross-threading during installation. It is recommended to replace spark plugs in sets to maintain balanced engine performance.

Quality Assurance and Warranty

Denso manufactures the 3048 spark plug to meet strict quality standards, using high-grade materials such as copper and nickel for electrode construction. The product undergoes rigorous testing to ensure durability and consistent performance. While specific warranty details may vary, Denso products typically come with manufacturer-backed quality assurance to support reliable operation in compatible vehicles.

BrandDenso
Part Number3048
PositionU-Groove Conventional
Center Electrode Core MaterialCopper
Center Electrode Tip MaterialNickel
Ground ConfigurationStandard
Ground Electrode Core MaterialNickel
Ground Electrode Quantity1
Ground Electrode Tip DesignU-Groove
Hex Size20.6
Manufacturer Heat Range20
Pre-Gap Size1.0
Reach19.00
Resistance5000
Seat TypeFlat
Thread Diameter14.00

This part fits 9 vehicles. Search below:

YearMakeModelPositionNotes
1986DodgeConquestN/AU-Groove Conventional
1986PlymouthConquestN/AU-Groove Conventional
1985DodgeConquestN/AU-Groove Conventional
1985PlymouthConquestN/AU-Groove Conventional
1984DodgeConquestN/AU-Groove Conventional
1984MitsubishiStarionN/AU-Groove Conventional
1984PlymouthConquestN/AU-Groove Conventional
1980DodgeColtN/AU-Groove Conventional
1979DodgeColtN/AU-Groove Conventional

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

W20EPR-U10

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.