951-12260 937-05065 Air Filter + 951-12690 Oil Filter Spark Plug for MTD Craftsman Powermore 420CC LT4200 T1000 T1200 R1000 CC760ES Troy-Bilt TB30R Lawn Mower

What It Is

This is a three-piece maintenance kit (air filter, oil filter, and spark plug) designed for the 60-hour or seasonal tune-up of MTD/Craftsman/Troy-Bilt lawn tractors and rear-engine riders powered by the 420cc Powermore (OHV) engine, including models like the LT4200, T1000, T1200, R1000, CC760ES, and TB30R.

Fitment & Compatibility

• Engine: Fits MTD Powermore 420cc (OHV) engines (model numbers typically start with 1P65, 1P72, or 1P75).
• Lawn tractors: Compatible with Craftsman LT4200, T1000, T1200, R1000; Troy-Bilt TB30R, TB30, TB42; Cub Cadet CC760ES, CC550; MTD Yard Machines 420cc models.
• Deck size: Works with 30–42 inch decks (deck size doesn’t affect engine fit, but verify engine model).
• OEM vs aftermarket: Aftermarket kit; OEM equivalents are MTD 951-12260 (air filter), 937-05065 (oil filter), and 951-12690 (spark plug). Cross-check your engine’s model number (stamped on valve cover or shroud) to confirm.
• Measurements: Air filter is about 5.75" x 3.75" x 1.5"; oil filter is 2.5" tall with 3/4-16 thread; spark plug gap should be set to 0.030" (included but check).

Key Things to Know

• Quality: Aftermarket kit at a fraction of OEM cost; filters are paper/foam and spark plug is copper-core. Works fine for seasonal use, but OEM filters may last longer in dusty conditions.
• Installation: Easy—15 minutes with basic tools (socket/wrench for plug, pliers for oil filter). Air filter slides into housing; oil filter hand-tighten only (don’t over-torque).
• Common gotcha: The spark plug comes pre-gapped, but always verify gap with a feeler gauge (0.030") before installing—many arrive off-spec. Also, the oil filter can be tight to reach on some models; use a strap wrench if needed.
• Not for: Engines with a different air filter housing (e.g., Kohler, Briggs & Stratton) or non-Powermore 420cc engines. Check your air filter shape before buying.

Should You Buy It

If you own a 420cc Powermore-equipped MTD/Craftsman/Troy-Bilt tractor and want a cheap, complete tune-up kit for routine maintenance, this is a solid value. It’s not premium OEM, but for the price and ease of installation, it’s perfect for DIYers who don’t mind verifying the spark plug gap. Skip it if you need heavy-duty filters for extreme dust or prefer genuine MTD parts.