{"product_id":"bushings-inc-df-100-dual-flex-marine-engine-mount","title":"Bushings Inc. DF-100 Dual-Flex Marine Engine Mount | 850 lb Capacity","description":"\u003ch2\u003eBushings Inc. DF-100 Dual-Flex Marine Engine Mount\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e DF-100 (also shown as DF100 \/ BUIDF100 \/ BUHDF100)\u003c\/p\u003e\n\u003cp\u003eThe Bushings Inc. DF-100 is a low-profile, adjustable vibration-isolating engine mount for marine inboard engine and transmission installations. Its Dual-Flex design combines a heavy-duty cast aluminum alloy base with an oil- and fuel-resistant elastomer element to isolate engine vibration in longitudinal, lateral, and vertical directions. It is rated for a total installed engine and transmission weight of up to \u003cstrong\u003e850 lb (386 kg)\u003c\/strong\u003e when used in the recommended four-point mounting configuration. Steel components are corrosion-resistant plated. Leveling and locking nuts are included.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Dual-Flex\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum engine\/transmission weight:\u003c\/strong\u003e 850 lb (386 kg) — four-point mounting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStud:\u003c\/strong\u003e 5\/8”-18 (adjustable, with leveling and locking nuts)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting bolt size:\u003c\/strong\u003e 3\/8 in. (9.5 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting-hole centers:\u003c\/strong\u003e 4 in. (101.6 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall length:\u003c\/strong\u003e 5 in. (127 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall width:\u003c\/strong\u003e approx. 2.75 in. (69.9 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall height:\u003c\/strong\u003e approx. 4 in. (101.6 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum mounting clearance:\u003c\/strong\u003e 1.875 in. (47.6 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase material:\u003c\/strong\u003e Heavy-duty cast aluminum alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElastomer:\u003c\/strong\u003e Oil- and fuel-resistant rubber\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMarine inboard gasoline and light-duty diesel engine installations using four-point mounting\u003c\/li\u003e\n\u003cli\u003eApplications where total installed weight (engine + transmission + accessories) does not exceed 850 lb (386 kg)\u003c\/li\u003e\n\u003cli\u003eInstallations requiring a 5\/8”-18 adjustable stud, 4-inch bolt centers, and a minimum mounting height of 1.875 in.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFitment Notice\u003c\/h3\u003e\n\u003cp\u003eEngine mounts must be matched to the installation, not just the engine model. Before ordering, confirm:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTotal installed weight — engine, transmission, and all attached accessories combined\u003c\/li\u003e\n\u003cli\u003eNumber of mounting points in the engine-bed configuration\u003c\/li\u003e\n\u003cli\u003eMounting-hole bolt size and spacing (3\/8 in. fasteners, 4 in. centers)\u003c\/li\u003e\n\u003cli\u003eRequired stud diameter and thread (5\/8”-18)\u003c\/li\u003e\n\u003cli\u003eAvailable vertical clearance under the engine (minimum 1.875 in.)\u003c\/li\u003e\n\u003cli\u003eRequired engine-alignment adjustment range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen calculating load per mount, include the full installed weight — engine, transmission, flywheel, and any engine-mounted equipment. Undersizing mounts based on engine weight alone without accounting for attached components is a common cause of premature mount failure.\u003c\/p\u003e\n\n\u003ch3\u003eCross-Reference Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eDF-100\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDF100\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBUIDF100\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBUHDF100\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen to Replace Engine Mounts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eElastomer is cracked, split, hardened, or visibly deteriorated\u003c\/li\u003e\n\u003cli\u003eEngine movement under load has increased noticeably\u003c\/li\u003e\n\u003cli\u003eVibration transmitted into the hull has increased\u003c\/li\u003e\n\u003cli\u003eMounting hardware is corroded, bent, or damaged\u003c\/li\u003e\n\u003cli\u003eMount height has collapsed or sagged\u003c\/li\u003e\n\u003cli\u003eShaft or coupling alignment is difficult to maintain\u003c\/li\u003e\n\u003cli\u003eMounts were disturbed or damaged during engine or transmission service\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWorn mounts allow engine position to shift under load, which increases drivetrain vibration and can place additional stress on couplings, shaft seals, and exhaust connections.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount to a sound, solid engine bed using appropriately sized marine-grade fasteners\u003c\/li\u003e\n\u003cli\u003eUse the 5\/8”-18 threaded stud for vertical adjustment during engine height and alignment setting\u003c\/li\u003e\n\u003cli\u003eSet the engine to the correct height using the leveling nut, complete shaft or coupling alignment, then secure the locking nut\u003c\/li\u003e\n\u003cli\u003eRecheck alignment after launching — mounts will settle slightly once the hull is in the water and the engine weight is fully loaded\u003c\/li\u003e\n\u003cli\u003eInspect mounting hardware torque after the first several hours of operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eThe DF-100 is a solid all-round choice for compact inboard gasoline engine installations where the four-mount combined weight stays under 850 lb and the 4-inch bolt centers and 5\/8”-18 stud match the existing engine bed. It is commonly used during engine replacements, repower projects, and mount-replacement jobs on older inboard installations where the mounts have deteriorated from age, fuel exposure, or heat cycling.\u003c\/p\u003e\n\u003cp\u003eThe most common mistake when ordering engine mounts is selecting by engine model alone without confirming the mounting dimensions and load rating. Weight capacity, stud size, bolt-hole spacing, and minimum mounting height all need to match the existing installation — a physically similar mount with the wrong height or stud thread will cause alignment problems that are time-consuming to diagnose after the engine is back in the boat. Also note that the DF-100 is rated for 850 lb on a \u003cem\u003efour-point\u003c\/em\u003e mounting setup; per-mount load capacity drops if fewer mounting points are used.\u003c\/p\u003e","brand":"BUS","offers":[{"title":"Default Title","offer_id":43563780177956,"sku":"DF100","price":98.25,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/ce48e1c5-3e80-402f-bbf5-72005e494fb7.png?v=1788821800","url":"https:\/\/marisolmarine.com\/products\/bushings-inc-df-100-dual-flex-marine-engine-mount","provider":"Marisol Marine Company","version":"1.0","type":"link"}