Murray 1001717MA Muffler Model 28 and 31 for Lawn Mowers

What It Is

The Murray 1001717MA Muffler Model 28 and 31 is a direct-replacement exhaust muffler for select Murray lawn mowers, designed to reduce engine noise and direct exhaust away from the operator. It’s intended for mowers with 28- or 31-inch cutting decks using specific Briggs & Stratton engines.

Fitment & Compatibility

Before buying, verify these three things:

• Engine model: This muffler fits Murray mowers equipped with Briggs & Stratton engines from the 28-inch (model 28) and 31-inch (model 31) deck series. Check your engine’s model number (stamped on the valve cover or blower housing) against compatibility lists.
• Deck size: Only for decks measuring 28 or 31 inches. Measure your deck if unsure—other sizes won’t align.
• Mounting pattern: Confirm the muffler’s flange bolt spacing matches your engine’s exhaust port. Measure center-to-center distance between bolts (common for B&S 500-700 series). This is an OEM part, not universal aftermarket, so fit is specific to Murray/Briggs combos.

Key Things to Know

• Quality: OEM part, so it matches original specs exactly—no modification needed. Heavier gauge steel than most aftermarket options, lasting longer under heat.
• Installation difficulty: Easy, 15-20 minutes. Requires a socket wrench and possibly penetrating oil if bolts are rusty. No special tools needed.
• Common gotchas: Old bolts often snap when removing; keep spares on hand. The gasket (not included) should be replaced—buy separately if yours is worn. Check that the muffler outlet points away from the mower deck to avoid heat damage.
• Price note: At $70.60, it’s pricier than universal mufflers, but the exact fit saves hassle.

Should You Buy It

Buy this if you own a Murray mower with a 28- or 31-inch deck and a compatible Briggs engine—especially if you want a hassle-free, OEM-quality replacement that lasts. Skip it if you have a different brand or deck size; universal mufflers won’t bolt up without modification.