Velvet Drive 71C Forward Piston Housing Bearing B107A | 10-17 / 1017
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Velvet Drive 71C Forward Piston Housing Bearing B107A
Part Number: B107A (Velvet Drive / Borg-Warner)
The Velvet Drive B107A is the forward piston housing ball bearing used in 71C / 10-17 marine transmissions. It is located at the forward clutch and piston housing section of the transmission and is a model-specific internal component. This is not a universal 71C/72C replacement bearing.
Compatible Transmissions
- Velvet Drive 71C
- Borg-Warner 10-17 / 1017
- Selected 71C 1:1 direct-drive configurations
Documented 71C model examples:
- 1017-000-001
- 1017-000-002
- 1017-000-003
- 1017-000-004
- AS1-71C
- AS1-71CR
- AS1-71CB
- AS1-71CBR
Fitment Notice
B107A is specific to the 71C / 10-17 family. Do not use it in a 72C / 10-18 transmission. Velvet Drive service documentation specifies a different bearing for the 72C / 10-18 forward section:
- 71C / 10-17: B107A (this part)
- 72C / 10-18: B108A or catalog reference 1000-130-016, depending on production configuration
Always confirm from the transmission identification plate before ordering.
Cross-Reference Part Numbers
- Velvet Drive / Borg-Warner: B107A
- Aftermarket reference: ALT23326
When to Replace This Bearing
- Roughness or binding felt during rotation
- Radial or axial play exceeds service limits
- Pitting, corrosion, or damaged races visible during inspection
- Bearing noise present during operation
- Forward clutch assembly is being rebuilt
- Transmission has suffered lubrication contamination
Installation Notes
- Confirm the unit is a 71C / 10-17 from the identification plate before disassembly
- Inspect the forward clutch cylinder and bearing seating surfaces for wear
- Check associated snap rings (R6A-7 1/2 and 4734) for damage before reassembly
- Press the bearing squarely into position using appropriate bearing installation tools
- Avoid loading the rolling elements during installation
- Lubricate per Velvet Drive service procedures
- Verify clutch clearances and end play during reassembly
Related Parts
- Velvet Drive 71C / 72C Gasket & Oil Seal Kit A4867HA
- Velvet Drive Needle Bearing â 4840D
- Velvet Drive Double Ball Bearing â 71 Series | 4920A
- Velvet Drive Input Shaft â 71C / 72VDR Series | 71C-3A16
- Velvet Drive 5-Inch Output Coupling A4547HA | 10-Tooth Coarse Spline
Parts Desk Insights
The B107A is the correct choice when rebuilding the forward clutch section of a 71C / 10-17 transmission. It is one of the most commonly needed bearings during a full 71C overhaul and is often replaced alongside the gasket and seal kit.
The most common ordering mistake is assuming B107A fits both 71C and 72C transmissions â the title âVD71/72â on older catalog entries has caused this confusion for years. B107A is a 71C / 10-17 part only. If you have a 72C / 10-18, the forward housing bearing is B108A or 1000-130-016. Pull the identification plate number before ordering to avoid a costly return.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
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Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
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