This page lists 15 automatic transmission parts for the 1963 MG 1100, across 9 part types, covering the 1.1L L4 engine. Every part shows its brand, manufacturer part number and fitment notes.
The automatic transmission on the 1963 MG 1100 covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. The largest groups are Fluid Pump Seal (3 parts), Transmission Fluid (3 parts) and Fluid Pan Gasket (2 parts). The other 6 part types cover the remaining 7 parts.
Every part on this page is matched to the 1.1L L4 — the only engine offered in the 1963 MG 1100.
The most listed brands for 1963 MG 1100 automatic transmission parts are PIONEER (4 parts), WJB / INMOTION PARTS (3 parts) and VALVOLINE (3 parts), plus 4 more brands.
Each part number listed for the 1963 MG 1100 opens a page with every vehicle that part fits.
Band
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PIONEER | 767030 | 🇺🇸 US | FrontFlex | View on Amazon |
This table covers the apply bands inside the automatic transmission.
One part is listed for the 1963 MG 1100 — PIONEER 767030.
Extension Housing Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PIONEER | 759044 | 🇺🇸 US | Trans. code T35Outer Diameter: 1.72" | View on Amazon |
This table covers the seals at the Extension Housing. 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 1963 MG 1100 — PIONEER 759044.
Fluid Pan Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ATP | RG1 | 🇺🇸 US | Trans. code T35 | View on Amazon |
| PIONEER | 749033 | 🇺🇸 US | Trans. code T35 | View on Amazon |
This table covers the gaskets that seal the Fluid Pan. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
2 Fluid Pan Gasket parts for the 1963 MG 1100 come from 2 brands — ATP and PIONEER.
This group includes ATP RG1 and PIONEER 749033.
Fluid Pump Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS | WS99168 | 🇺🇸 US | Front3 speed trans. | View on Amazon |
This table covers the precision wear sleeves used to restore a transmission pump seal surface.
One part is listed for the 1963 MG 1100 — WJB / INMOTION PARTS WS99168.
Fluid Pump Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ATP | RO1 | 🇺🇸 US | FrontTrans. code T35 | View on Amazon |
| PIONEER | 759043 | 🇺🇸 US | FrontTrans. code T35 | View on Amazon |
| WJB / INMOTION PARTS | WS480479H | 🇺🇸 US | Front3 speed trans. | 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.
3 Fluid Pump Seal parts are listed for the 1963 MG 1100, from ATP, PIONEER and WJB / INMOTION PARTS.
Part numbers include ATP RO1, PIONEER 759043 and WJB / INMOTION PARTS WS480479H.
Governor / Modulator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA | 510054 | 🇺🇸 US | Brown Stripe Adjustable Modulator Screw-In Type | View on Amazon |
This table covers the governors and modulators that control transmission shift pressure.
This group shows a single part: ROSTRA 510054.
Manual Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL | 311189 | 🇺🇸 US | 3 speed trans.with Borg-Warner T35 Transmission | View on Amazon |
| WJB / INMOTION PARTS | WS311189 | 🇺🇸 US | 3 speed trans.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 1963 MG 1100, from NATIONAL and WJB / INMOTION PARTS.
This group includes NATIONAL 311189 and WJB / INMOTION PARTS WS311189.
Torque Converter Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER | SR3491 | 🇺🇸 US | 3 speed trans.Trans. code T35 | View on Amazon |
This table covers the wear sleeves used to restore a Torque Converter seal surface.
One part is listed for the 1963 MG 1100 — SCHAEFFLER SR3491.
Transmission Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE | VV3246 | 🇺🇸 US | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Quart | View on Amazon |
| VALVOLINE | 773775 | 🇺🇸 US | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Gallon | View on Amazon |
| VALVOLINE | 881051 | 🇺🇸 US | 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 1963 MG 1100 come from VALVOLINE.
Part numbers include VALVOLINE VV3246, VALVOLINE 773775 and VALVOLINE 881051.
Buying Automatic Transmission Parts for a 1963 MG 1100
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 1.1L 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: Fluid Pump Seal and Transmission Fluid .
Frequently Asked Questions
How many automatic transmission parts fit the 1963 MG 1100?
Our catalog currently lists 15 automatic transmission parts for the 1963 MG 1100 across 9 subcategories and 7 brands, covering the 1.1L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of automatic transmission problems on a 1963 MG 1100?
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 1963 MG 1100 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 1963 MG 1100?
Every part on this page is matched to the 1.1L 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 1963 MG 1100
Automatic Transmission Parts for Other MG 1100 Years
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