Spark Plug for 1998-1999 KTM 50 Mini Adventure & More - Champion 821-1

$5.99

Champion Spark Plug Spark Plug 821-1 - view 2

Part number: 821-1

UPC: 037551011438

Condition: New

Weight: 0.15 LBS

Item Package Code: EA

Part Has Core (Y/N): N

Item Package Quantity: 1

$5.99

Current Stock: 117

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Champion Spark Plug Spark Plug P/N:821-1

$5.99

Description

Champion 821-1 spark plug for the 1998-1999 KTM 50 Mini Adventure and other vehicles makes the spark that ignites the fuel and air in the cylinder.

Champion Copper Plus Small Engine product line
Copper core center electrode for accurate heat range control and longer life
Coated shell that resists corrosion in harsh environments
Pre-gapped design that simplifies installation
Engineered for reliable ignition in all weather conditions

Quick facts

Part: Champion 821-1 spark plug
Fits: 1998-1999 KTM 50 Mini Adventure and other vehicles
Condition: New

Hard starting, a rough idle or misfires can mean a plug is worn. A dirty carburetor, stale fuel or a weak ignition coil can be behind those problems too, so find the cause before buying a plug.

Fits

This plug is listed for a wide range of models from several makes, including the 1998-1999 KTM 50 Mini Adventure, the 1997 Cobra King and the 1978 Ski-Doo Citation 300. It is built to meet OE fit, form and function. Open the "Vehicles it fits" section to check your exact model and engine.

Specifications

Fit and size

Thread diameter: 14 mm (0.551 in)
Pre-gap: 0.030 in (0.76 mm)
Seat type: Flat
Quantity per vehicle: 1 to 3, depending on the model

Build and materials

Type: Copper Plus Small Engine, standard replacement grade
Center electrode tip: nickel
Washer: crush, included
Condition: New
Country of origin: China

In the box

One spark plug with its crush washer. How many a vehicle takes depends on the model; the 1978 Ski-Doo Citation 300 takes two.

Interchange: L77JC4

Product information is for general reference and may contain errors. See our Disclaimer.

Manufacturer's description

Product specs

Vehicles it fits

Interchange numbers

This part cross-references / interchanges with the following part numbers:

L77JC4

Buyer's Q&A

Frequently Asked Questions

Is this King plug right for the 1997 Cobra King?

Yes. Champion 821-1 is listed for the 1997 Cobra King, which takes one plug. Open the "Vehicles it fits" section to check other models and engines.

Is a crush washer included with the Champion 821-1?

Yes. The plug comes with its crush washer, and this listing is one spark plug.

What gap and thread size does this spark plug have?

It comes pre-gapped at 0.030 in (0.76 mm), with a 14 mm (0.551 in) thread diameter and a flat seat.

What are signs a Copper Plus small engine spark plug is worn?

Hard starting, rough running or misfires can mean wear. A worn electrode or corroded shell on a removed plug is another sign, and a shop can test the ignition to find the cause.

Does the Champion 821-1 replace the L77JC4 plug?

Yes. L77JC4 is the plug type listed as an interchange for Champion 821-1.

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Spark Plug for 1998-1999 KTM 50 Mini Adventure & More - Champion 821-1