This page lists 8 automatic transmission parts for the 1978 MG Midget, across 5 part types, covering the 1.5L L4 engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 1978 MG Midget, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. Most of the listed parts are Transmission Fluid (3 parts), Manual Shaft Seal (2 parts) and Fluid Pump Repair Sleeve (1 part). The other 2 part types cover the remaining 2 parts.
Every part on this page is matched to the 1.5L L4 — the only engine offered in the 1978 MG Midget.
The most listed brands for 1978 MG Midget automatic transmission parts are WJB / INMOTION PARTS (3 parts), VALVOLINE (3 parts) and NATIONAL (1 part), plus 1 more brand.
Each part number listed for the 1978 MG Midget opens a page with every vehicle that part fits.
Fluid Pump Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS | WS99168 | 🇺🇸 US 🇨🇦 CA | Frontwith Borg-Warner T35 Transmission | View on Amazon |
This table covers the precision wear sleeves used to restore a transmission pump seal surface.
One part is listed for the 1978 MG Midget — WJB / INMOTION PARTS WS99168.
Fluid Pump Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS | WS480479H | 🇺🇸 US 🇨🇦 CA | Frontwith Borg-Warner T35 Transmission | View on Amazon |
This table covers the seals at the Fluid Pump. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
One part is listed for the 1978 MG Midget — WJB / INMOTION PARTS WS480479H.
Manual Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL | 311189 | 🇺🇸 US 🇨🇦 CA | with Borg-Warner T35 Transmission | View on Amazon |
| WJB / INMOTION PARTS | WS311189 | 🇺🇸 US 🇨🇦 CA | with Borg-Warner T35 Transmission | View on Amazon |
This table covers the seals at the Manual Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
2 Manual Shaft Seal parts are listed for the 1978 MG Midget, from NATIONAL and WJB / INMOTION PARTS.
Part numbers include NATIONAL 311189 and WJB / INMOTION PARTS WS311189.
Transmission Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE | VV3246 | 🇺🇸 US 🇨🇦 CA | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Quart | View on Amazon |
| VALVOLINE | 773775 | 🇺🇸 US 🇨🇦 CA | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Gallon | View on Amazon |
| VALVOLINE | 881051 | 🇺🇸 US 🇨🇦 CA | Maxlife Multi-Vehicle Full Synthetic ATF5 Gallon Bay Box | View on Amazon |
This table covers the automatic-transmission fluids specified for this gearbox. Typical signs include harsh or delayed shifts, fluid that smells burnt, or a shudder at light throttle. Use exactly the specification in the notes. Automatic transmissions are unforgiving of the wrong fluid.
3 Transmission Fluid parts for the 1978 MG Midget come from VALVOLINE.
Part numbers include VALVOLINE VV3246, VALVOLINE 773775 and VALVOLINE 881051.
Transmission Fluid Additive
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ATP | AT202 | 🇺🇸 US 🇨🇦 CA | Automatic Transmission Fluid Synthetic Protectant | View on Amazon |
This table covers the conditioners and additives used with this transmission fluid.
This group shows a single part: ATP AT202.
Buying Automatic Transmission Parts for a 1978 MG Midget
On this vehicle, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts.
- Confirm you have the 1.5L L4 engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the filter and pan gasket with every fluid service, and flush the cooler lines when replacing a failed unit.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Transmission Fluid and Manual Shaft Seal .
Frequently Asked Questions
How many automatic transmission parts fit the 1978 MG Midget?
Our catalog currently lists 8 automatic transmission parts for the 1978 MG Midget across 5 subcategories and 4 brands, covering the 1.5L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of automatic transmission problems on a 1978 MG Midget?
Common symptoms include delayed or harsh engagement, slipping under load, fluid that smells burnt, or shuddering at light throttle around 40 mph. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the filter and pan gasket with every fluid service, and flush the cooler lines when replacing a failed unit.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 1978 MG Midget was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 1978 MG Midget?
Every part on this page is matched to the 1.5L L4 engine. Then use exactly the fluid specification in the notes — automatic transmissions are the least forgiving component on the vehicle about fluid choice. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1978 MG Midget
Automatic Transmission Parts for Other MG Midget Years
Switch vehicle or jump to a subcategory
Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.