Alto DA-101 Marine Flywheel Damper Plate | 13.87 in. | 26-Spline | 350 ft-lbs | SAE 11.5 | Replaces Velvet Drive 1004650001
Alto DA-101 Marine Flywheel Damper Plate | 13.87 in. | 26-Spline | 350 ft-lbs | SAE 11.5 | Replaces Velvet Drive 1004650001
Alto
Out of stock
Couldn't load pickup availability
Alto DA-101 — Marine Flywheel Damper Plate | 13.87 in. OD | 26-Spline | 350 ft-lbs | SAE 11.5 Flywheel Pattern
Alto DA-101 is a flywheel-mounted marine transmission damper plate rated at 350 ft-lbs of torque. It features a 13.87 in. outside diameter, 26-spline drive hub, 8 yellow dampening springs, and an 8-bolt SAE 11.5 flywheel mounting pattern. Designed for a variety of diesel marine engine applications. Replaces Velvet Drive 1004650001. Also referred to as a flywheel flex plate or transmission drive plate. Alto Products Corp. is a leading manufacturer of marine flywheel damper plates and transmission components for Velvet Drive and related diesel applications.
Confirm Fitment Before Ordering
Confirm your engine’s flywheel bolt pattern is SAE 11.5 and your transmission spline count is 26 before ordering. Contact us with your engine model, serial number, and transmission model and we’ll verify correct application by email, text, or live chat.
Part Specifications
- Alto Part Number: DA-101
- OEM Cross-Reference: Velvet Drive 1004650001
- Outside Diameter: 13.87 in.
- Spline Count: 26-spline
- Springs: 8 yellow dampening springs
- Torque Rating: 350 ft-lbs
- Bolt Pattern: 8 bolt holes — SAE 11.5 flywheel mounting pattern
- Application: Diesel marine engine applications
- Also Known As: Flywheel flex plate, transmission drive plate
- Vendor: Alto Products Corp.
Additional Information
- Vendor: Alto Products Corp.
- Part Number: DA-101
- OEM Cross-Reference: Velvet Drive 1004650001
- Outside Diameter: 13.87 in.
- Spline Count: 26-spline
- Springs: 8 yellow dampening springs
- Torque Rating: 350 ft-lbs
- Bolt Pattern: SAE 11.5 — 8 bolt holes
Installation Notes
Installation should be performed by a qualified marine technician following the applicable service manual for your diesel engine and transmission combination. Verify SAE 11.5 flywheel bolt pattern and 26-spline input compatibility before installation.
Frequently Asked Questions
Q: What does Alto DA-101 replace?
A: Alto DA-101 replaces Velvet Drive 1004650001.
Q: What is the torque rating for Alto DA-101?
A: Alto DA-101 is rated at 350 ft-lbs. Confirm this rating is appropriate for your specific engine output before ordering.
Q: What flywheel bolt pattern does Alto DA-101 use?
A: Alto DA-101 uses an 8-bolt SAE 11.5 flywheel mounting pattern. Confirm your engine flywheel matches this pattern before ordering.
Q: What is the difference between Alto DA-101, DA-107, and DA-108?
A: DA-101 features 8 yellow springs, a 13.87 in. OD, SAE 11.5 bolt pattern, and a 350 ft-lbs torque rating — designed for diesel applications. DA-107 features 8 purple springs and a 13.25 in. OD — designed for GM and Chrysler Big Block gasoline engines with Velvet Drive 71C/72C. DA-108 features 8 white springs and a 13-1/4 in. OD — designed for late 5.7L GM Big Block engines in the 250–310 HP range. Do not substitute — confirm the correct damper plate for your engine and application.
Q: What is a flywheel damper plate?
A: A flywheel damper plate (also called a flex plate or transmission drive plate) mounts to the engine flywheel and connects to the transmission input. The dampening springs absorb torsional shock between the engine and transmission, protecting both components from driveline shock loads during acceleration and deceleration.
! Compatibility references are provided for informational purposes only and do not constitute a fitment guarantee. Part numbers, application listings, and "replaces" cross-references are based on manufacturer data and are intended as a starting point for identification — not a guarantee of fit for your specific engine, hull, or installation.
Buyer is solely responsible for verifying compatibility with their engine model, serial number, model year, and trim configuration before purchase. If you are unsure whether this part fits your application, contact MacombMarineParts.com before you buy — we're available via text, email, or online chat to help verify compatibility for your specific application.
MacombMarineParts.com is not liable for parts ordered based on assumed fitment. Returns due to buyer-selected incorrect fitment are subject to our standard return and restocking fee policies.