Description
The Champion Spark Plug 825 (J4C) is a dependable OE-type replacement spark plug designed for consistent ignition performance and long service life. Its copper core center electrode helps improve conductivity and heat control, supporting reliable starts, reduced fouling, and steady wear across a wide range of compatible marine, industrial, and power equipment applications.
Built to ISO and SAE standards, this Champion Copper Plus plug is designed for standard replacement use in small engine, marine, and industrial engine applications. The flat-seat design, nickel electrode materials, non-removable nut terminal, and crush washer configuration help support dependable installation and reliable service in compatible engines and equipment.
Features
- OE-type replacement spark plug
- Champion Copper Plus Small Engine classification
- Dependable performance and durability
- Copper core center electrode for improved conductivity and heat control
- Resists fouling
- Superior corrosion resistance
- Built to ISO and SAE standards for proven performance
- Plug type: J4C
- Part description: Spark Plug
- Grade type: Standard Replacement
- Center electrode tip material: Nickel
- Center electrode design: Standard
- Center electrode diameter: 0.1 in.
- Ground electrode quantity: 1
- Ground electrode tip material: Nickel
- Ground electrode core material: Nickel
- Ground electrode material: Nickel Copper Alloy
- Pre-gap size: 0.030 in. / 0.78 mm
- Hex size: 0.813 in. / 20.650 mm
- Manufacturer heat range: 4
- Seat type: Flat
- Reach: 0.375 in.
- Thread diameter: 0.551 in. / 14.000 mm
- Resistor type: No
- Electrical terminal type: Non-Removable Nut
- Hex type: Hex
- Washer included: Yes
- Washer type: Crush
- Indexed: No
- Subject to Prop 65: No
Vehicle Fitment
Agricultural, Industrial, Construction, and Equipment Fitment
Compatible with listed applications including, but not limited to:
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Barco — M1
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Craftsman — Base, 502.270210, 536.270211, 536.270212
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Green Machine — 4600
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International — 815, 915
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Lombard — All Model(s)
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McCulloch — W1-A1, W1-A2
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Onan — CCK Series
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Pioneer — 700F, 700G, 850
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Skil — M1, 2910-T1, 2911-T1, 2912-T1, 2913-T1
Marine Fitment
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Evinrude — DU — 1.5L 1458.45cc/89cid
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Johnson — DU — 1.5L 1458.45cc/89cid
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Johnson — NU — 1.5L 1458.45cc/89cid
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Mercury Marine — 350
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Mercury Marine — 650
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Mercury Marine — 650S
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Mercury Marine — 800E
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Mercury Marine — 800E — L1
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Mercury Marine — 800EL
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Mercury Marine — 850
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Mercury Marine — 900
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Mercury Marine — 1000
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Mercruiser — 225 — 5.0L V8 4998.05cc/305cid
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Mercruiser — 225 — 5.4L V8 5358.57cc/327cid
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Mercruiser — 250 — 5.4L V8 5358.57cc/327cid
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Mercruiser — 250 — 5.7L V8 350cid
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Mercruiser — 250 MCM — 5.4L V8 5358.57cc/327cid
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Mercruiser — 250 MIE — 5.4L V8 5358.57cc/327cid
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Mercruiser — 270 — 5.7L V8 350cid
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Mercruiser — 270 — 5.7L V8 5735.47cc/350cid
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Mercruiser — 270 MCM — 5.7L V8 350cid
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Mercruiser — 270 MCM — 5.7L V8 5735.47cc/350cid
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Mercruiser — 270 MIE — 5.7L V8 350cid
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Mercruiser — 270 MIE — 5.7L V8 5735.47cc/350cid
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OMC — DU — 1.5L 1458.45cc/89cid
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Volvo Penta — BB70
Additional Engine and Power Unit Fitment
Also listed for numerous standalone engine and power unit applications, including:
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All Model(s) — 4-cylinder applications
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590 Series — 1-cylinder applications
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DDGX — 1-cylinder applications
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G-160 — 2.6L L4 160cid
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GM-12-525 — 28L V12 1710cid
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GNHC-4 — 8.1L 4-cylinder 495cid
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GNH-220 — 12.2L 6-cylinder 743cid
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GNH-250 — 14L 6-cylinder 855cid
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GV12-450 — 28L V12 1710cid
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H540 — 8-cylinder applications
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H570 — 8-cylinder applications
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H884 — 8-cylinder applications
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L478 — 7.8L L6 478cid
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TH570 — 8-cylinder applications
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TH884 — 8-cylinder applications
