DENSO 5036 U-Groove Nickel Spark Plug

The DENSO 5036 (T20PR-U11) U-Groove spark plug features an innovative channeled ground electrode design that delivers superior ignition performance and engine efficiency. The patented U-shaped groove in the ground electrode allows the flame to expand within the gap, creating a larger flame front for more complete and consistent combustion.

Key Features:

• U-Groove ground electrode generates a larger spark nucleus at ignition point
• Copper core center electrode provides superior thermal conductivity
• Purified alumina insulator with 5-rib design prevents flashover and voltage loss
• Copper-glass seal bonds center electrode and insulator for gas-tight seal
• 360-degree laser welded construction for maximum durability
• Machine-rolled threads prevent seizing and cross-threading in aluminum heads
• 100% pre-fired to ensure reliable operation
• Lasts twice as long as conventional spark plugs

Specifications:

• Thread Diameter: 14mm (1.25mm pitch)
• Reach: 11.6mm (0.460")
• Seat Type: Tapered
• Hex Size: 5/8" (16mm)
• Terminal Type: Solid
• Heat Range: 20

This U-Groove design fires leaner fuel mixtures more efficiently than conventional plugs, delivering improved throttle response, better fuel economy, and lower emissions. Original equipment in many automotive applications from manufacturers including Buick, Chevrolet, Ford, GMC, Isuzu, Mercury, Oldsmobile, and Pontiac. Cross-references to Ford ASF32P and other OEM part numbers.

Torque Specifications: Cast Iron: 7-15 lb-ft, Aluminum: 7-15 lb-ft