Spark Plug TR5 2238 V-Power, Pre-Set Gap: 0.040" 1-PLUG

NGK TR5 (2238) V-Power spark plugs are a solid OE-style upgrade for many older GM and marine engines. The V-grooved nickel center electrode and copper core help improve ignitability, cold starts, and idle quality compared to basic economy plugs. This listing is for an 1-plug, pre-gapped to 0.040", ready to drop into most V8 applications that call for TR5.

• Brand: NGK

• Series: V-Power

• Part Number: TR5

• Stock Number: 2238

• Service Number: TR5

• Product Type: Spark plug Eachlectrode & Core

• Center Electrode Core Material: Copper

• Center Electrode Tip Material: Nickel

• Center Electrode Design: Standard

• Center Electrode Projection: Mid projection

• Center Electrode Insulator Tip Projection: 0.16" (4.0 mm)

• Ground Configuration: J-gap

• Ground Electrode Quantity: 1

• Ground Electrode Core Material: Nickel

• Ground Electrode Tip Material: Nickel

• Ground Electrode Tip Design: Standard

Dimensions & Fit

• Thread Size: M14 x 1.25 (metric)

• Reach: 0.689" (17.5 mm)

• Seat Type: Tapered

• Hex Size: 5/8" (16 mm)

• Insulator Height: 2.07" (52.5 mm)

• Short Style Spark Plug: No

• Skirt: No (0.0" skirt length)

Electrical & Heat Range

• Resistor Type: Yes

• Resistance: 5,000 Ω (approx.)

• Manufacturer Heat Range: 5

Gap & Setup

• Pre-Set Gap: 0.040" (1.0 mm)

• Washer Included: No (taper-seat plug doesn’t use a crush washer)

Materials

• Insulator Material: Ceramic

• Overall Material Grade: Nickel/Copper

Packaging & Origin

• Quantity: 8 spark plugs (enough for most V8 engines)

• Country of Origin: Typically made in USA or Japan 

• OEM / Interchange Numbers: 103, 2223, AM132420, AR764, BPR5EFS