Genuine Briggs & Stratton 825278 or 825043 Oil Drain Plug Daihatsu

Genuine Briggs & Stratton Oil Drain Plug with Integrated Neoprene Gasket – OEM Part #825278 (Also Cross-Listed as 825043)

This is a factory-original Briggs & Stratton oil drain plug, engineered for reliable sealing, easy maintenance, and long service life in high-vibration outdoor power equipment. Unlike generic replacements, this OEM plug features a permanently bonded neoprene gasket that resists hardening, cracking, and oil seepage—critical for commercial mowers, generators, and industrial engines.

🔧 Technical Specifications

• Part Number: 825278 (primary), also listed as 825043 in older catalogs
• Thread Size: 1/2″–20 SAE (standard for Briggs & Stratton oil pans)
• Gasket Type: Molded neoprene rubber, bonded directly to plug face
• Material: Zinc-plated steel for corrosion resistance
• Torque Spec: 25–30 ft-lbs (per Briggs & Stratton service manual)
• Reusability: Designed for multiple uses—gasket maintains seal integrity

✅ Verified Engine Compatibility (Briggs & Stratton Only)

This drain plug fits a wide range of Briggs & Stratton 4-stroke gasoline engines used in commercial and residential equipment, including:

• Intek Series: 31, 33, 40, 42, 44 (e.g., 407777, 446777)
• Vanguard™ Big Block V-Twin: 23–40 HP models (e.g., 356447, 386447, 406777, 40H877)
• Commercial/Industrial Series: 31H777, 33R877, 40H877, 44R877
• Professional Series: Often found on Scag, Exmark, Toro, and Ferris mowers with Briggs engines
• Generators & Pumps: Briggs-powered units from Generac, Briggs & Stratton, and others

Tip: If your engine model ends in “777” or “877” (e.g., 40H877), this plug is very likely correct.

Why Choose Genuine Briggs & Stratton Parts?

Aftermarket drain plugs often use loose fiber washers or inferior rubber that hardens over time. The OEM 825278 plug’s factory-bonded gasket ensures:

• No double-gasketing errors
• Consistent torque and sealing pressure
• Resistance to oil degradation and temperature cycling
• Compliance with warranty and maintenance requirements

About Red Rock Turf

We are a certified stocking distributor for Briggs & Stratton, Kohler, Kawasaki, and Toro. We don’t just sell OEM parts—we install them daily in our own repair shop on commercial mowers, generators, and turf equipment. That means we test every part for real-world performance.

Not sure if this fits your engine? Send us your engine model number (usually stamped on the valve cover or air shroud), and we’ll confirm compatibility before you buy!

Call or text us at 435-213-5854—we’re here to help you get the right part, the first time.