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TC Remanufacturing DA40 Automatic Transmission Torque Converter
| Brand | TC Remanufacturing DA40 |
|---|---|
| Bolt Circle | 9.250 |
| Converter Codes | S (s2, s3, etc.) |
| Converter Diameter | 10.000 |
| Converter Type | Lock up |
| Hub Type | Flats |
| Mounting Thread Size | 10mmx1.25 |
| Mounting Type | 4 studs raised pads 10mm x 1.0 |
| Pilot Diameter | 0.825 |
| Ring Gear | No |
| Spline Count | 18 |
| Stall | High |
| Fits | Mazda · 4 vehicles |
Lock-up design. Delivers efficient power transfer with reduced slippage.
High-stall converter. Helps the engine reach its power band more quickly.
18-spline hub. Provides a precise, secure connection for dependable operation.
TC Remanufacturing DA40 Torque Converter for Mazda Miata
The TC Remanufacturing DA40 is an automatic transmission torque converter built for 1990-1993 Mazda Miata applications. It features a 10.000-inch diameter, lock-up design, high stall characteristics, and a flats hub type for the specified transmission setup.
Key Features
- Part number: DA40
- Automatic transmission torque converter
- Lock-up converter type
- 10.000-inch converter diameter
- High stall specification
- 9.250 bolt circle
- 18-spline count
- 4 raised-pad studs with 10mm x 1.0 mounting type
- 10mm x 1.25 mounting thread size
- 0.825 pilot diameter
- No ring gear
- Converter code: S (S2, S3, etc.)
Detailed Description
TC Remanufacturing DA40 is an automatic transmission torque converter for Mazda Miata models from 1990 through 1993. The lock-up design supports direct drivetrain coupling at cruise, while the high stall specification and 10.000-inch diameter align with the transmission requirements for this application. With an 18-spline count, flats hub type, 9.250 bolt circle, and 0.825 pilot diameter, this DA40 torque converter is built around the fitment and mounting details needed for the specified Mazda Miata platform.
Compatible With 1990-1993 Mazda Miata automatic transmission applications, this TC Remanufacturing DA40 torque converter is identified by converter code S (S2, S3, etc.) and uses a 4-stud raised-pad mounting pattern with 10mm x 1.0 studs and 10mm x 1.25 thread size. The DA40 is a direct-fit service part for buyers searching for a Mazda Miata torque converter, lock-up automatic transmission converter, or high stall replacement for these model years.
Common Reasons for Replacement
- Transmission shudder or slip during lock-up operation
- Delayed engagement after shifting into gear
- Excessive engine flare under acceleration
- Converter damage from wear, contamination, or overheating
- Restoration or repair of a 1990-1993 Mazda Miata automatic transmission
Installation Notes and Tips
Verify converter code, spline count, bolt circle, pilot diameter, and mounting style before installation. Confirm the transmission matches the listed Mazda Miata fitment and inspect the cooler circuit, flexplate, and seals during replacement. Proper fluid fill and system flushing are important after torque converter service.
Quality Assurance
TC Remanufacturing supplies transmission hard parts with application-specific dimensions and fitment details for accurate replacement selection. This DA40 torque converter is listed for 1990-1993 Mazda Miata automatic transmission use.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1993 | Mazda | Miata | 1.6L | L4 | N/A | — |
| 1992 | Mazda | Miata | 1.6L | L4 | N/A | — |
| 1991 | Mazda | Miata | 1.6L | L4 | N/A | — |
| 1990 | Mazda | Miata | 1.6L | L4 | N/A | — |
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