Replacing inboard engine mounts isn't a job you want to do twice. The mount has to fit the bolt pattern, handle the engine's weight, and tolerate constant exposure to oil, fuel, and bilge water. That's the decision every boat owner faces when shopping for marine engines propulsion parts. The DF100 pair from Bushings Inc is built to answer those questions with a compact casting and a corrosion-fighting design.
Quick verdict
At $119.95 for two mounts, the DF100 is built for a 4-point inboard installation with a low-profile shape that needs only 1-7/8 inches of clearance. The heavy-duty cast aluminum base and corrosion-resistant steel parts aim to survive a marine environment, and the manufacturer recommends this mount for setups up to 850 pounds.
INBOARD ENGINE MOTOR MOUNTS DF100 PAIR
This package includes two DF100 mounts. Each mount has an overall height of 4 inches, a base-to-rim height of 1-7/8 inches, a 4-inch bolt center, a 5-inch length, a 2-3/4-inch width, and a 5/8-18 stud. The 'Dual Flex' elastomer element resists oil and fuel, and all steel parts are zinc dichromate plated. Bushings Inc makes this in the United States.
Who it suits
This pair suits boat owners with small to mid-size inboard engines. The compact design helps when the engine bed has limited vertical space. If you're refitting an older boat and want mounts that don't add height, this pair is worth considering.
What stands out from the listed details
The material choices are the big story. The heavy-duty cast aluminum alloy base is durable, and the elastomer is specifically formulated to resist oil and fuel, so it won't break down quickly in a bilge. The zinc dichromate plating on steel parts adds another layer of protection, and the 5/8-18 stud gives a solid anchor for the leveling nut.
Meaningful trade-offs
The main trade-off is that this is a pair, not a full set of four; a four-point setup needs two pairs if you're replacing all mounts. The other limitation is the weight rating: 850 pounds for a four-point setup, so heavier engines aren't supported. That weight ceiling is important to check before you order.
Bottom line
If the bolt spacing and stud size match your engine mounts, this is a practical, corrosion-resistant replacement at a fair price. It handles tight engine beds well and is rated for a typical inboard engine. Order two pairs for a complete replacement set, and you'll have a full setup without paying for extras you don't need.
