Air Filter Tune Up Kit Replacement for Briggs & Stratton Intek 15-18.5 HP Replacement for Craftsman Lt1000 Shutoff Valve Clamp Spark Plug Fuel Filter

What It Is

This is a multi-piece air filter tune-up kit designed for Briggs & Stratton Intek engines (15–18.5 HP), commonly found on Craftsman LT1000 lawn tractors. It includes an air filter, fuel filter, spark plug, shutoff valve, and clamp—everything needed for a basic seasonal engine service.

Fitment & Compatibility

• Engine family: Briggs & Stratton Intek single-cylinder OHV engines, 15–18.5 HP (models like 31C707, 31P977, 33R877).
• Machine fit: Primarily Craftsman LT1000 and similar rear-engine riders, but also fits many MTD, Husqvarna, or Troy-Bilt mowers using the same engine.
• Check before buying: Verify your engine model number (stamped on the valve cover or blower housing). This kit is NOT for Intek V-twins, older Briggs flatheads, or non-Intek engines.
• OEM vs aftermarket: This is an aftermarket kit (not genuine Briggs & Stratton). The air filter and fuel filter dimensions match OEM part numbers 492932 (air) and 691035 (fuel), but the spark plug is a standard J19LM or RC12YC equivalent—confirm gap (0.030" typical).
• Measurements: Air filter is roughly 7.5" x 4.5" x 1.5"; fuel filter is 1.5" long with 1/4" barbed ends.

Key Things to Know

• Quality is adequate for seasonal use. The air filter is paper, not foam, and the spark plug is a copper-core replacement—expect 100–150 hours of life.
• Installation is straightforward (10–20 minutes). No special tools beyond a socket wrench and pliers. The shutoff valve is a nice bonus for fuel system work.
• Common gotcha: The fuel filter may be slightly smaller than OEM—ensure the barb ends fit your fuel line snugly (some users report needing a small hose clamp). The plug gap is pre-set but always verify with a feeler gauge.
• Not a full tune-up kit. It lacks oil, oil filter, or blade—so pair with an oil change for complete service.

Should You Buy It

If you have a Craftsman LT1000 or similar tractor with a Briggs Intek 15–18.5 HP engine and just need a basic, budget-friendly service kit for one season, this is a solid buy. Skip it if you want genuine OEM parts, have a V-twin engine, or need a longer-lasting premium filter.