Best Outboard Motor Mount Plate for Your Transom Setup

#1 · Best Overall

1. telfair TSP Kit

• dimensions: 15 x 12 x 0.37 in
• Dimensions: 15 x 12 x 0.37 in
• Material: Aluminum

Best for: Heavy four-stroke transom support.

Why it ranks #1: Includes top and lower 3/8-inch cast-aluminum plates, with 15-inch and 12-inch lengths and stated compatibility with major outboard brands.

A pair of 3/8-inch cast-aluminum plates makes this Telfair kit a substantial support option for standard top and lower outboard bolt holes. Its listing specifically connects the set with distributing mounting stress and handling modern heavier four-stroke engines, while naming compatibility with Mercury, Yamaha, Evinrude, and Johnson motors.

The TSP-1 measures 15 by 2 inches for top holes, and the TSP-2DP measures 12 by 2 inches for lower holes, giving the kit separate pieces for both mounting areas. CNC precision machining and 3/8-inch cast aluminum provide the stated construction details; the stress-distribution function is intended to help protect the transom from mounting loads. Its listed major-brand compatibility and four-stroke focus make it relevant to heavier modern outboards, not motor-height changes.

Skip it if you need a single top-hole plate rather than a pair; the Danti TSP-1 serves the top bolt-hole position.

Choose the Telfair set for standard top-and-lower mounting areas, particularly when supporting a heavier four-stroke outboard. It focuses on load distribution and transom protection rather than adjustable lift.

Listed on Amazon as: TSP-1 & TSP-2DP Transom Support Plate Kit Fit for 15" X 2" Top Bolt Holes Standard and 12" x 2" Lower Bolt Holes Standard- 3/8" Cast Aluminum for Outboard Motors 2pcs,Replace#3001-806

#2 · Best Standard Kit

2. Camoo TSP Kit

• Material: Cast Aluminum

Best for: Standard-pattern transom reinforcement.

Why it ranks #2: Pairs a 15-by-2-inch top plate with a 12-by-2-inch lower plate, both 3/8-inch thick, for standard bolt holes.

A matched top-and-lower plate set pairs a 15-inch TSP-1 with a 12-inch TSP-2DP, giving standard outboard mounting patterns support at both bolt-hole areas. The cast-aluminum plates are intended to distribute engine mounting stress, making this a practical choice when reinforcing a transom rather than changing motor height.

The two-piece layout separates the top and lower bolt-hole positions, with the TSP-1 specified for standard top holes and the TSP-2DP for standard lower holes. Their 3/8-inch thickness and cast-aluminum construction provide the reinforcement material, while the stated universal pattern covers major brands including Mercury, Evinrude, Johnson, and Yamaha. Buyers get plates for both locations in one kit; this is transom support, not a vertical-lift adjustment plate.

Skip it if you need to raise or lower motor height; the Bzcovac 50012 offers a fixed five-inch vertical extension.

Choose this Camoo kit when a standard-pattern installation needs support at both top and lower bolt holes. Its two cast-aluminum plates address transom reinforcement, but the set does not provide vertical engine-height adjustment.

Listed on Amazon as: TSP-1 & TSP-2DP Transom Support Plate Kit For Transom Top & Lower Bolt Hole

#3 · Best 6061 Aluminum

3. LQYLMY Transom Set

• dimensions: 15 x 3 x 1.5 in
• Dimensions: 15 x 3 x 1.5 in
• Material: 6061 aluminum alloy

Best for: CNC-finished standard-pattern set.

Why it ranks #3: Specifies 6061 aluminum, 0.375-inch thickness, and standard 13-inch top and 10-inch lower bolt-hole spacing.

CNC-carved 3D surface patterns distinguish this 6061 aluminum top-and-bottom support set while its stated 13-inch and 10-inch bolt spacings target standard mounting layouts. The paired plates provide reinforcement at both transom bolt areas, with corrosion-resistant billet aluminum suited to marine use where the listed pattern matches.

The 15-inch top plate uses 13-inch bolt spacing, while the 12-inch lower plate uses 10-inch spacing; both are two inches wide and 0.375 inches thick. Those stated dimensions help identify the intended standard mounting pattern before installation. The 6061 aluminum alloy is described as rust- and corrosion-resistant, supporting marine use, and the CNC-carved 3D patterns add a visible finish detail without changing the set’s reinforcement role.

Skip it if you need a lift rather than bolt-area reinforcement; the Bzcovac 50012 provides a fixed five-inch vertical extension.

Pick this LQYLMY set when the boat uses the listed 13-inch top and 10-inch lower spacing and you want paired aluminum reinforcement. Its standard-pattern dimensions are the key fit boundary.

Listed on Amazon as: Upgraded Boat Transom Support Plate Top & Bottom Set, 10” & 13” Standard Bolt Hole Spacing, 6061 Aluminum Transom Plate for Outboard or Jack Plate Mounting

#4 · Best Top Plate

4. Danti TSP-1 Plate

• Material: Aluminum

Best for: Single top-hole support plate.

Why it ranks #4: A 15-by-2-inch, 3/8-inch-thick aluminum plate targets standard top bolt holes and transoms without twist clamps.

A 15-by-2-inch TSP-1 plate targets standard top bolt holes, giving outboards without twist clamps a dedicated aluminum support surface. The listing says it distributes engine-bolt stress and weight to protect the transom, making this single-plate format appropriate when the top mounting position is the reinforcement need.

The 3/8-inch-thick aluminum plate is specified for top bolt holes with standard patterns and is described as fitting many Mercury, Evinrude, Johnson, and Yamaha outboards. By distributing the weight and stress from engine bolts, it provides transom support at the upper mounting area. The listing characterizes it for newer outboards without twist clamps; unlike a top-and-bottom kit, this product is a single TSP-1 plate for the top-hole position.

Skip it if you need support at both bolt-hole areas; the Camoo TSP-1 and TSP-2DP kit includes top and lower plates.

This Danti plate fits buyers seeking reinforcement specifically at standard top bolt holes, including installations without twist clamps. Its single-plate format is the boundary: it does not provide a matching lower support plate.

Listed on Amazon as: Transom Support Plate TSP-1 Outboard Motor Aluminum Transom Support Plate For Top Bolt Holes Standard Bolt Holes 15" X 2", 3/8" Thickness

#5 · Best Broad Reinforcement

5. Bememo Reinforcement Plates

• dimensions: 16.93 x 11.81 x 0.79 in
• Dimensions: 16.93 x 11.81 x 0.79 in
• Material: Aluminum

Best for: Broad-coverage backing plates.

Why it ranks #5: The two-piece set uses 0.2-inch-thick aluminum and is described as distributing outboard loads across the transom.

Two broad aluminum backing plates, each specified at 0.2-inch thickness, give this Bememo set a reinforcement format for distributing outboard loads across the transom. Its stated compatibility with most outboard engines makes it a general-purpose option for buyers seeking backing support, rather than a plate that raises or adjusts motor height.

The two-plate package uses high-strength aluminum and is described as supporting engine weight and torque while withstanding harsh water conditions. The plates’ broad backing-plate format and stated load distribution can help spread mounting forces across the transom instead of concentrating support at a single narrow point. Since the listing describes compatibility with most outboards but gives no bolt spacing, buyers should treat it as a general reinforcement set, not a specified adjustment system.

Skip it if you need stated top-and-lower bolt spacing; the LQYLMY LYTSP12 lists 13-inch and 10-inch patterns.

Bememo suits buyers looking for a two-piece aluminum backing-plate set to reinforce an outboard transom. Its supplied details emphasize broad compatibility and load support, not fixed bolt spacing or motor-height adjustment.

Listed on Amazon as: Bememo 2 Pcs Transom Support Plate, Boat Outboard Transom Reinforcement

#6

6. Generic Full-Pattern Plate

• dimensions: 14 x 7.8 x 0.79 in
• Dimensions: 14 x 7.8 x 0.79 in
• Material: Aluminum

Best for: Full-pattern aluminum reinforcement.

Why it ranks #6: Its 0.2-inch aluminum full-pattern design is described as compatible with most outboards, though specific bolt spacing is not supplied.

A full-pattern layout is the defining choice here, providing comprehensive backing support for outboard mounting rather than a narrow, position-specific support strip. The 0.2-inch aluminum plate is described as corrosion-resistant and compatible with most outboards, making it a general reinforcement option when its full pattern suits the installation.

The 0.2-inch thickness and aluminum construction provide the stated material basis for supporting the motor, while the full-pattern design is intended to spread reinforcement across the mounting area. The listing describes compatibility with most outboard motors, offering broader application than a plate specified only for a particular top or lower bolt position. It is a backing plate for transom support; the supplied facts do not describe a lift or height-adjustment mechanism.

Skip it if you want matched top-and-lower plates with stated spacing; the LQYLMY LYTSP12 specifies both standard patterns.

Consider this Generic plate when a full-pattern backing format and broad outboard compatibility match your reinforcement needs. The listing gives thickness and material but not bolt spacing, so it is less specific about mounting layout.

Listed on Amazon as: Outboard Transom Reinforcement Backing Plate for Outboard Motors, 0.2" Thick, Full Pattern, Durable Aluminum, Compatible with Most Outboards

#7

7. Bzcovac Static Extension

• dimensions: 20.47 x 5.12 x 2.76 in
• Dimensions: 20.47 x 5.12 x 2.76 in
• Material: Aluminum

Best for: Jet-conversion height extension.

Why it ranks #7: Provides a fixed 5-inch vertical extension and can work alone or alongside hydraulic or manual jack plates.

A fixed five-inch vertical lift is the defining feature of the Bzcovac 50012, raising the motor above the transom for shallow-water setups and jet-drive conversions. Its aluminum extension can also be used alongside a manual or hydraulic jack plate, so it suits buyers seeking added height rather than a simple backing plate.

The stated five-inch lift provides a set increase in engine height, which is particularly relevant to jet-drive conversions that require a higher mounting position. Aluminum construction keeps the extension in the same material category as many marine mounting components. The plate may be installed alone or combined with a hydraulic or manual jack plate for additional adjustment options, but its own vertical extension is fixed rather than adjustable.

Skip it if you need top-and-lower transom reinforcement rather than a lift; the Camoo TSP-1 and TSP-2DP kit covers both bolt-hole areas.

This is a fit for boaters converting to jet drive or setting up for shallow water who need a fixed five-inch rise. Choose another format if your priority is backing-plate reinforcement or variable height.

Listed on Amazon as: 5 Inch Static Jack Plate Vertical Extension for CMC, 50012 Aluminum Outboard Motor Mount Plates to Raise Motor Height, Fits Up to V6 Engines

#8

8. ElaraBerry EPDM Pad

• Material: EPDM

Best for: Vibration-damping transom pad.

Why it ranks #8: Uses high-density EPDM as a transom pad intended to reduce vibration and distribute clamp force, rather than lift the motor.

High-density EPDM material makes this transom pad distinct from rigid aluminum reinforcement plates, with the stated purpose of absorbing engine vibration and minimizing noise. Its stress-distribution surface is also described as protecting against clamp dents, so it suits boaters prioritizing vibration management and transom contact protection.

The thick EPDM marine material acts as a shock absorber, according to the listing, helping reduce high-frequency engine harmonics, cockpit noise, and hull resonance. Its engineered stress-distribution surface is intended to spread clamp force and guard the transom against dents. The package includes one pad, so this is a cushioning and protection component rather than a pair of metal backing plates or a motor-height adjustment mechanism.

Skip it if you need a metal top-and-lower reinforcement kit; the telfair TSP-1 and TSP-2DP set uses cast aluminum plates.

Choose the ElaraBerry pad when reducing vibration, noise, or clamp dents is central to your small-outboard setup. Its EPDM cushioning role differs from rigid backing plates, so match the component to the support you need.

Listed on Amazon as: Heavy Duty EPDM Transom Pad Outboard Motor Mounting Plate

#9

9. BLWOTMOR Lift Plate

• dimensions: 3.94 x 3.94 x 15.16 in
• Dimensions: 3.94 x 3.94 x 15.16 in

Best for: Manual-height small-boat lift.

Why it ranks #9: The listing describes manual engine-height adjustment, but gives limited mounting dimensions and no specific material details.

Manual height adjustment is the key function of this lift plate, allowing the outboard to be raised or lowered from its transom mounting position. Its two upright side brackets and central lifting body form the stated bracket structure, making it an option for small-boat owners seeking adjustable engine height.

The product is described as a transom-mounted lift plate that provides a stable foundation while allowing manual changes to engine height. That adjustment can help owners set motor position for their boating setup, while the two upright side brackets and central lifting body comprise its listed structure. The listing identifies it for small boats and describes silver-toned metal construction; it does not provide a specific lift range or a stated bolt pattern.

Skip it if you need a specified five-inch fixed rise; the Bzcovac 50012 lists that vertical extension and jet-drive use.

This BLWOTMOR plate is for small-boat owners who want manual engine-height adjustment at the transom. Its supplied details do not specify adjustment range or bolt pattern, making those the central fit boundaries.

Listed on Amazon as: Marine Engine Mount Outboard Motor Lift Plate Transom Bracket with Manual Height Adjustment and Aluminum Alloy Construction Suitable for Small Boats , Fixed Outboard Lift Plate – 60

#10

10. FJMQHU Mounting Bracket

• Dimensions: 9.84 x 4.33 x 1.97 in

Best for: Lightweight small-craft bracket.

Why it ranks #10: A lightweight aluminum bracket is listed for inflatable boats, kayaks, canoes, and dinghies, but it lacks bolt-pattern details.

A lightweight aluminum mounting bracket is the defining feature of this FJMQHU transom plate, with listed applications spanning inflatable boats, kayaks, canoes, dinghies, yachts, and fishing use. Its compact stated dimensions make it a small-craft mounting option, rather than a broad transom reinforcement or adjustable lift system.

The aluminum construction and lightweight description support buyers who want a portable mounting component for small craft. The listing names inflatable boats, kayaks, canoes, dinghies, yachts, and fishing applications, giving a clear sense of its intended use range. Its stated item dimensions are 9.84 by 4.33 by 1.97 inches, and the description calls installation convenient; no motor-height adjustment or reinforcement pattern is specified in the supplied details.

Skip it if you need adjustable engine height for a small boat; the BLWOTMOR manual lift plate offers height adjustment.

Consider this FJMQHU bracket for buyers mounting an outboard on a listed small craft such as a kayak, canoe, or dinghy. Its lightweight aluminum format is not described as a height-adjustable lift.

Listed on Amazon as: Black Aluminum Transom Plate Outboard Mounting Engine