Product Overview
The S-1659 Transmission Input Shaft Assembly is supplied as a new independent aftermarket replacement for professional transmission repair. This input shaft assembly receives drive from the clutch side and carries it into the transmission gear train. Reference part number S-1659 is provided to support part-to-part comparison, not as a substitute for application verification.
The 2-inch pull arrangement, 10 clutch splines, and 18 gear teeth are important fit points for clutch engagement and internal gear mesh. The specified position is Transmission Input, with Input Configuration: 2-Inch Pull / 10 Splines / 18 Teeth. These details should be checked against the removed component and the transmission build information before purchase.
Key Features
- New independent aftermarket replacement for transmission rebuilding.
- Defined 2-inch pull, 10-spline, 18-tooth input configuration.
- Reference part number S-1659 supports accurate cross-checking.
- Professional installation and inspection of mating components are recommended.
Product Specifications
| Reference Part Number | S-1659 |
|---|---|
| Product Type | Transmission Input Shaft Assembly |
| Condition | New |
| Replacement Type | Independent Aftermarket Replacement |
| Component Position | Transmission Input |
| Input Configuration | 2-Inch Pull / 10 Splines / 18 Teeth |
| Transmission Application Reference | Selected 10 / 13 / 15 / 18-Speed Configurations |
Application and Ordering
Measure the original shaft before purchase. Confirm the pull style, all 10 clutch splines, 18 gear teeth, pilot and bearing diameters, seal surface, overall length near 11.94 inches, and transmission configuration. Application lists can include variations by build date, ratio, housing, or internal configuration. If any detail differs, request a dimensional check before ordering. Installation should be performed by a qualified transmission technician, with mating parts, bearings, lubrication paths, and adjustment settings inspected during assembly.
Frequently Asked Questions
Is S-1659 a genuine branded part?
No. This is an independent aftermarket replacement compatible with selected Eaton / Fuller applications. These names and reference numbers are used solely for identification and compatibility comparison; no affiliation, authorization, sponsorship, or endorsement is claimed.
What should be checked before ordering S-1659?
Confirm the exact transmission model and compare the reference number, component position, input configuration, dimensions, spline or tooth details, and physical configuration with the removed part.
Which S-1659 dimensions are most important?
The pull style, clutch spline count, gear tooth count, pilot diameter, bearing journals, seal surface, and overall shaft length should all match the original.
Compatibility and IP Notice
All third-party brand names, model designations, logos, and part numbers are the property of their respective owners. They are used solely for identification and compatibility reference. This independently supplied aftermarket replacement is not an OEM or genuine branded product and is not manufactured, authorized, licensed, sponsored, affiliated with, or endorsed by any referenced trademark owner.
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