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LS Engine Parts and Accessories - Flywheels and Power Take-Offs

ls bolt kits
Hardin Billet Aluminum Flywheel - Internal Balance for GM LS1-LS7 (Bottom Mount Starter)
Your Price:
$419.99

Hardin Billet Aluminum Flywheel - Internal Balance for GM LS1-LS7 (Bottom Mount Starter)

755-8644

Hardin Billet Aluminum Flywheel Internal Balance for GM (LS1-LS7)

Ring Gear Tooth Quantity:168-tooth, Rear Main Seal Style:1-piece, Flywheel Material:Aluminum

These precision billet aluminum flywheels deliver all of the strength and reliability that you desire with the light weight and advantages that only aluminum can provide. Lightweight Aluminum alloy flywheels can offer substantial benefits for certain situations such as light weight boats or racing boats that need rapid engine rpms instantaneously. These are recommended as replacements for factory-cast flywheels in high performance and racing applications. They're better for acceleration of heavier race boats. All Hardin flywheels are CNC-machined from certified materials.

  • Accepts Mercury couplers and heavy duty drive plates
  • Multi-point ring gear attachment
  • Light weight yet durable
  • Zero/neutral balance • 168 tooth gear
  • Bottom Mount Starter Flywheel
  • Weight: 12 lbs

Internal Balance Alum. Flywheel Gen 4,5, & 6 B/B Chevy
Your Price:
$419.99

Billet Aluminum Flywheel - Internal Balanced For LS Chevy (Top Mount Starter)

755-8650

Internal Balance Alum. Flywheel LS 1, 2, 3, 6, 7 Chevy (Top/Bellhousing Mounted Starter)

These all new billet aluminum flywheels are manufactured from certified billet material that will not break up under the stress and severe punishment of on and off throttle in high RPM marine environments.

The flywheels have machined retaining recesses every 120 degrees. Attaching locating tabs have been installed on the ring gear making rear gear shift and movement a thing of the past. By using a lighter aluminum flywheel, you will be rewarded with both faster acceleration and deceleration. Giving you the edge you’re looking for.

Billet construction

  • Accepts Mercury couplers and heavy duty drive plates
  • Multi-point ring gear attachment
  • Light weight yet durable
  • Zero/neutral balance • 168 tooth gear

Billet Aluminum Flywheel - Internal Balanced For LSA/LSX Chevy (Bottom Mount Starter)
Your Price:
$454.99

Billet Aluminum Flywheel - Internal Balanced For LSA/LSX Chevy (Bottom Mount Starter)

755-8651

Internal Balance Alum. Flywheel LSA/LSX Chevy (Bottom Mounted Starter)

These all new billet aluminum flywheels are manufactured from certified billet material that will not break up under the stress and severe punishment of on and off throttle in high RPM marine environments.

The flywheels have machined retaining recesses every 120 degrees. Attaching locating tabs have been installed on the ring gear making rear gear shift and movement a thing of the past. By using a lighter aluminum flywheel, you will be rewarded with both faster acceleration and deceleration. Giving you the edge you’re looking for.

Billet construction

  • Accepts Mercury couplers and heavy duty drive plates
  • Multi-point ring gear attachment
  • Light weight yet durable
  • Zero/neutral balance • 168 tooth gear

Hardin Steel Flywheel - Internal Balance for GM LS1-LS7 (Bottom Mount Starter)
Your Price:
$419.99

Hardin Steel Flywheel - Internal Balance for GM LS1-LS7 (Bottom Mount Starter)

755-8643

Hardin Steel Flywheel Internal Balance GM (LS1-LS7)

Ring Gear Tooth Quantity:168-tooth, Rear Main Seal Style:1-piece, Flywheel Material:Steel

These precision steel flywheels deliver all of the strength and reliability that you need in a performance application) Cast flywheels are porous units designed for low rpm truck and industrial applications) Steel provides a shatter free strength that could mean the difference between ripping your boat in half under way. These neutrally balanced units drilled to accept popular Mercruiser high Performance couplers.

  • Accepts Mercury couplers and heavy duty drive plates
  • Multi-point ring gear attachment
  • Zero/neutral balance • 168 tooth gear
  • Bottom Mount Starter Flywheel
  • Weight: 28 Lbs

Steel Flywheel - Internal Balance for LS Chevy (Top Mount Starter)
Your Price:
$419.99

Steel Flywheel - Internal Balance for LS Chevy (Top Mount Starter)

755-8649

Internal Balance Steel Flywheel LS 1, 2, 3, 6, 7 Chevy (Top/Bellhousing Mounted Starter)

These all new steel flywheels are manufactured from certified material that will not break up under the stress and severe punishment of on and off throttle in high RPM marine environments.

The flywheels have machined retaining recesses every 120 degrees. Attaching locating tabs have been installed on the ring gear making rear gear shift and movement a thing of the past. 

  • Accepts Mercury couplers and heavy duty drive plates
  • Multi-point ring gear attachment
  • Light weight yet durable
  • Zero/neutral balance • 168 tooth gear

Billet Aluminum Flywheel - Internal Balanced For LSA/LSX Chevy (Top Mount Starter)
Your Price:
$454.99

Billet Aluminum Flywheel - Internal Balanced For LSA/LSX Chevy (Top Mount Starter)

755-8653

Internal Balance Alum. Flywheel LSA/LSX Chevy (Top Mounted Starter)

These all new billet aluminum flywheels are manufactured from certified billet material that will not break up under the stress and severe punishment of on and off throttle in high RPM marine environments.

The flywheels have machined retaining recesses every 120 degrees. Attaching locating tabs have been installed on the ring gear making rear gear shift and movement a thing of the past. By using a lighter aluminum flywheel, you will be rewarded with both faster acceleration and deceleration. Giving you the edge you’re looking for.

Billet construction

  • Accepts Mercury couplers and heavy duty drive plates
  • Multi-point ring gear attachment
  • Light weight yet durable
  • Zero/neutral balance • 168 tooth gear

Steel Flywheel - Internal Balanced For LSA/LSX Chevy (Bottom Mount Starter)
Your Price:
$439.99

Steel Flywheel - Internal Balanced For LSA/LSX Chevy (Bottom Mount Starter)

755-8652

Internal Balance Steel Flywheel LSA/LSX Chevy (Bottom Mounted Starter)

These all new steel flywheels are manufactured from certified material that will not break up under the stress and severe punishment of on and off throttle in high RPM marine environments.

The flywheels have machined retaining recesses every 120 degrees. Attaching locating tabs have been installed on the ring gear making rear gear shift and movement a thing of the past. 

  • Accepts Mercury couplers and heavy duty drive plates
  • Multi-point ring gear attachment
  • Zero/neutral balance • 168 tooth gear

High Performance Damper Plate
Your Price:
$399.99

High Performance Damper Plate

220-96116

High Performance Damper Plate

Heavy Duty - Similar to the standard duty but designed to take the punishment of a high performance engine. 26 Spline.

  • Overall Dia.: 13-1/4"
  • Spring Housing: 7-1/8"
  • Outer Lip: 9-1/2"
  • Inner Dia: 1-1/4"
  • Spline: 26
  • Thickness: 1-1/16"
OEM: Drive Plate Mercury 816618

Standard Duty Damper Plate
Your Price:
$225.99

Standard Duty Damper Plate

220-96115

Standard Duty Damper Plate

Standard Duty - These plates contain damper springs similar to a car clutch disc. These springs take the shock out of the shift. Not recommended for high performance applications.


Heavy Duty Bravo Bellhousing
Your Price:
$459.99

Heavy Duty Bravo Bellhousing

421-04-2295B

IMCO Heavy Duty Bravo Bellhousing

IMCO's new flywheel bellhousing is a direct replacement for installations using Bravo, XR, XZ and IMCO XTreme Advantage SC drives. The new bellhousing is reinforced in all critical areas with additional gusseting around the motor mount area. There is a flange at the top of the housing for accessory mounting. Better....and still affordable.


DriveGuardian, Bravo
Your Price:
$1,499.99

Ultra HP Bravo Drive Coupler

221-1022

  • Made in the USA, patent pending
  • Anodized billet aluminum for maximum corrosion resistance, even in saltwater environments.
  • 100% rebuildable
  • Direct replacement for the OEM coupler, zero modifications required.
  • Chromoly splines that are stronger than the OEM coupler and can be replaced (for less $$ than purchasing a replacement OEM coupler) when required. 
  • Replaceable Polyurethane dampeners with external wear indicator
  • Rated for 1,000+HP
  • Perfect for diesel engines and applications that see extended idling (which is a common issue for the OEM coupler).
  • Unlike the OEM coupler, will not break loose and spin if the dampening material fails (Get Home Mode)
  • Two year warranty

COUPLER ASSY Mercruiser 861523A9
Your Price:
$697.00

HP Bravo Drive Coupler 8M0098795, 861523A9

525-8M0098795

Mercruiser HP Bravo Drive Coupler 8M0098795

  • Replaces Mercruiser # 8M0098795 and 861523A9
  • For use with Bravo Drives
  • High Performance Coupler
Note: Always make sure when installing a new coupler that the engine is aligned properly, failure to do so will greatly reduce lifespan.

Power Take Off Adapter - LS1 Chevy 1310 Flexplate
Your Price:
$139.99

Power Take Off Adapter - LS Chevy 1310 Flexplate

500-2000

Power Take Off Adapter - LS Chevy 1310 Flexplate

Uses 3/8-24 bolts on 2" x 2-3/8" centers

These flanges bolt on the flexplate and accept 1310 spicer drivelines.  There are many more available, just call us. These power take offs are needed when attaching your drive shaft to your engine.

Need help choosing your new PTO flange? Check out this handy tutorial!


Power Take Off Adapter - LS1 Chevy 1310 Flywheel
Your Price:
$139.99

Power Take Off Adapter - LS Chevy 1310 Flywheel

500-2005

Power Take Off Adapter - LS Chevy 1310 Flywheel

Uses 3/8-24 bolts on 2" x 2-3/8" centers

These flanges bolt on the flywheel and accept 1310 spicer drivelines.  There are many more available, just call us. These power take offs are needed when attaching your drive shaft to your engine.

Need help choosing your new PTO flange? Check out this handy tutorial!


Power Take Off Adapter - LS Chevy 1350 Flexplate
Your Price:
$149.99

Power Take Off Adapter - LS Chevy 1350 Flexplate

500-2010

Power Take Off Adapter - LS Chevy 1350 Flexplate

Uses 7/16-20 bolts on 2-3/8" x 2-7/8" centers

These flanges bolt on the flywheel or flexplate and accept 1350 spicer drivelines.  There are many more available, just call us. These power take offs are needed when attaching your drive shaft to your engine.

Need help choosing your new PTO flange? Check out this handy tutorial!


Power Take Off Adapter - LS Chevy 1350 Flywheel
Your Price:
$149.99

Power Take Off Adapter - LS Chevy 1350 Flywheel

500-2015

Power Take Off Adapter - LS Chevy 1350 Flywheel

Uses 7/16-20 bolts on 2-3/8" x 2-7/8" centers

These flanges bolt on the flywheel or flexplate and accept 1350 spicer drivelines.  There are many more available, just call us. These power take offs are needed when attaching your drive shaft to your engine.

Need help choosing your new PTO flange? Check out this handy tutorial!


1310 Spicer Bolt Pattern To Jet Pump Spline
Your Price:
$229.99

1310 Spicer Bolt Pattern To Jet Pump Spline

500-0844

1310 Spicer Bolt Pattern To Jet Pump Spline

  • Overall length: 7-1/2"
  • Spline Shaft: 1-3/8"
  • Flange Mount: 2" x 2-3/8"
  • Uses 3/8-24 bolts

This unit bolts to the PTO flange. This is the most standard u-joint assembly found in production style boats.
Note: The overall length does not include the PTO flange which is and additional one inch thick.

Need help choosing your new driveshaft? Check out this handy tutorial!


Jet H-Bar 1350 Driveline
Your Price:
$399.99

Jet H-Bar 1350 Driveline

500-0845

Jet H-Bar 1350 Driveline

  • Overall Length: 8-1/8"
  • Spline Shaft: 1-3/8"
  • Flange Mount: 2-3/8" x 2-7/8"
  • Uses 7/16-20 bolts.

This unit bolts to the PTO flange. Used for heavy duty jet H-bar for 600 horsepower and up.
Note: The overall length does not include the PTO flange which is and additional one inch thick.

Need help choosing your new driveshaft? Check out this handy tutorial!


LS1 14mm PTO 1310 Adapter Bolt Kit
Your Price:
$79.99

LS PTO 1310 Adapter Bolt Kit

500-2156

LS PTO 1310 Adapter Bolt Kit

This is a special metric bolt kit for 1310 LS PTO's.

Contains (6) M11x1.5x31 Bolts and (4) 3/8"-24 x 1" bolts


LS1 PTO 1350 Adapter Bolt kit
Your Price:
$79.99

LS PTO 1350 Adapter Bolt kit

500-2158

LS PTO 1350 Adapter Bolt kit

Contains (6) M11x1.5x31 Bolts and (4) 7/16"x1" bolts