CHAMPION 9425

Product Details Attribute

Champion Iridium spark plugs offer maximum performance regardless of engine or ignition type. Each plug has an extremely fine-wire iridium center electrode that is "laser-locked" to the center electrode, and a platinum V-trimmed ground electrode to ensure the longest life and greatest erosion resistance.

Features & Benefits:

Platinum ground to ensure high performance and long life
Maintains stable operating temperature under all engine loads
Greatest engine performance regardless of engine type or ignition system
Extremely fine-wire iridium center electrode laser-locked to center electrode
Exclusive Heat-active Alloy allows electrodes to reach optimal temperature quickly

This spark plug is pre-gapped, but may require minor adjustments with a Spark Plug Gap Tool / Feeler Gauge to match your engine's specifications. For proper engine performance, gaps should be within ±0.004" of OE-Recommended value.

Which CHAMPION Spark Plug Is Right For You?

Material / Series	Lifespan / Durability	Performance / Ignitability	Efficiency / Fuel Economy
Copper / Nickel Plus	★	★
Platinum Power	★★	★★★★	★
Double Platinum	★★★★	★★★★	★
Iridium	★★★	★★★★★	★★

Alternate/OEM Part Number(s)

{Alternate Inventory Numbers: RERX4ZWYPB1}OEM / Interchange Numbers: 12120040551, 12120041666

Warranty Information

CHAMPION Warranty Information:Iridium plugs 7 years - Double Platinum Power 5 years - Platinum Power 3 years - Copper Plus 2 years

CAPA CERTIFIED or NSF CERTIFIED

CAPA Certified or NSF Certified parts bear the seal of independent, third party organizations guaranteeing fitment and quality equal to original equipment. These parts may be required if your insurance company is paying for the repair.

Specifications
Thread Diameter (IN)	0.472
Washer Included	Yes
Center Electrode Tip Material	Iridium
Ground Electrode Core Material	Platinum
Ground Electrode Quantity	1
Ground Electrode Tip Design	J Gap
Ground Electrode Tip Material	Platinum
Manufacturer Heat Range	4
Seat Type	Flat
Center Electrode Design	Fine Wire
Electrical Terminal Type	Cup
Gap Style	J Gap
Ground Electrode Material	Platinum Pad Surface
Hex Size (IN)	0.551
Hex Size (MM)	14/Bi-hex
Hex Type	Bi-Hex
Indexed	No
Insulator Height (in)	0.0866
Insulator Projection (IN)	0.0866
Plug Type	RERX4ZWYPB-1
Pre-Gap Size (IN)	0.032
Pre-Gap Size (MM)	0.8
Reach (IN)	1.08
Resistor Type	Yes
Skirt	No
Thread Diameter (MM)	12
Washer Type	Crush