MTD 787-01869B-0638 MTD Red 21" Deck for Murray Troy-Bilt Yard-Machines Sure Push inch Cut B2M7 A0JT B2J1 B2JI B29Q B04R

What It Is

This is an OEM replacement steel deck shell (part #787-01869B-0638) for select 21-inch push mowers from Murray, Troy-Bilt, and Yard Machines. It replaces a rusted, cracked, or bent deck that no longer supports proper blade alignment or grass discharge.

Fitment & Compatibility

Deck size must be exactly 21 inches – measure your old deck from blade tip to blade tip, not the outer housing. This deck fits models with the following engine/frame prefixes: B2M7, A0JT, B2J1, B2JI, B29Q, B04R. It is designed for Murray “Sure Push” and Troy-Bilt/Yard Machines with the same chassis. Do not assume universal fit – check your mower’s model number (stamped under the seat or on the frame). This is an OEM MTD part (red finish), not an aftermarket universal. It will not fit Craftsman, Honda, or Toro decks.

What to check before buying:

• Measure bolt pattern for blade spindle (usually 4-hole, 3-inch center).
• Confirm that your existing blade adapter, pulley, and brake assembly transfer over (this deck is a bare shell, no hardware included).
• Verify deck mounting bracket holes align with your mower’s frame – the MTD “Sure Push” design has specific front/rear bracket spacing.

Key Things to Know

• Quality: Heavy-gauge steel with factory red paint. Holds up well against rust if kept clean and dry. No weak spots at weld joints.
• Installation difficulty: Intermediate. You must transfer all components (blade, spindle, pulley, cables, discharge chute) from the old deck. Expect 1–2 hours with basic hand tools.
• Common gotchas: The deck does not come with a new spindle or blade – reuse your old ones if in good condition. The front discharge opening is pre-cut, but you may need to drill holes for some older model chute brackets. Also, the paint can chip at bolt contact points; touch up with rust-preventive paint.
• No blade or hardware included: Order blade part 742-0408 or 742-0410 separately if needed.

Should You Buy It

Buy this if your current 21-inch MTD push mower deck is beyond repair (rusted through, cracked, or bent) and you want a direct OEM replacement that bolts on without fabrication. Skip it if you have a different brand (Craftsman, Toro, Honda) or a 22-inch deck – you’ll need a different part. For the price and solid reviews, it’s a reliable fix for a worn-out deck on a Murray/Troy-Bilt/Yard Machines mower you want to keep running.