Neapco N2-3-6041X – Ford 31 Spline Transmission Slip Yoke – 1330 Series
The Neapco N2-3-6041X is a heavy-duty steel transmission slip yoke designed for select Ford automatic and manual transmissions equipped with a compatible 31-spline output shaft. Featuring a 1330 series U-joint connection and a 6.031" centerline-to-end length, this slip yoke provides a dependable solution for driveshaft repairs, replacements, restorations, and custom driveline builds.
Manufactured by Neapco, the N2-3-6041X features a full-spline configuration, precision-machined 1.688" seal diameter, and 1.390" spline outside diameter. Its conventional slip yoke design makes it suitable for a variety of Ford, Lincoln, Mercury, and Tremec transmission applications.
Whether replacing a worn transmission slip yoke or building a custom steel, aluminum, or carbon fiber driveshaft, the Neapco N2-3-6041X provides a reliable 1330 series U-joint connection for compatible driveline combinations.
Product Specifications
| Specification | Details |
|---|---|
| Manufacturer | Neapco |
| Manufacturer Part Number | N2-3-6041X |
| Component Type | Transmission Slip Yoke |
| Material | Steel |
| U-Joint Series | 1330 |
| Spline Count | 31 (30/31 Involute) |
| Spline Outside Diameter | 1.390" |
| Spline Type | Full Spline |
| Centerline to End of Spline | 6.031" |
| Centerline to Face of Washer | 1.047" |
| Barrel / Seal Diameter | 1.688" |
| Approximate Barrel Length | 4.250" |
| U-Joint Bearing Cap Diameter | 1.062" |
| U-Joint Width | 3.625" |
| U-Joint Retention | Outside Snap Rings |
| Manufacturer-Listed Joint Angle | 15° |
| U-Joint Included | No |
Transmission Applications
Fits select transmissions equipped with compatible Ford-style 31-spline output shafts, including:
-
Ford C6 Automatic Transmission
-
Ford E4OD Automatic Transmission
-
Ford FMX Automatic Transmission
-
Ford T45 Manual Transmission
-
Ford Toploader Manual Transmission
-
Tremec TKO 500 Manual Transmission
-
Tremec TKO 600 Manual Transmission
-
Tremec T56 Manual Transmission (compatible configurations)
-
Tremec T56 Magnum Manual Transmission
-
Other compatible Ford-style 31-spline transmission output shafts
Important: Transmission model alone does not guarantee fitment. Verify the output shaft spline count, spline outside diameter, seal diameter, and required slip yoke length before ordering.
Features & Benefits
-
Steel construction for dependable driveline performance
-
Ford-style 31-spline transmission connection
-
Accepts 1330 series U-joints
-
6.031" centerline-to-end length
-
Precision-machined 1.688" seal surface
-
Full-spline design
-
Outside snap ring U-joint retention
-
Suitable for transmission repairs, restorations, and custom driveshaft builds
-
Compatible with properly configured steel, aluminum, and carbon fiber driveshaft assemblies
-
Genuine Neapco driveline component
Important Fitment Information
Verify transmission output shaft spline count, spline outside diameter, barrel/seal diameter, U-joint series, and required slip yoke length before ordering.
Important: This slip yoke uses a Ford-style 31-spline configuration with a 1.390" spline outside diameter and a 1.688" seal diameter. It is not interchangeable with Ford 28-spline or GM 27-spline slip yokes.
The spline configuration is commonly described as 30/31 spline because one spline position may be intentionally omitted. This missing position, sometimes called a blind spline, is included in the total spline count.
This slip yoke accepts 1330 series U-joints with approximately 1.062" bearing caps and a 3.625" U-joint width.
Proper spline engagement and slip yoke travel must be maintained throughout the suspension's operating range. Ensure the slip yoke does not bottom out in the transmission or lose adequate spline engagement during suspension extension.
U-joint is not included.