The 1959 Morris Minor has 12 automatic transmission parts with verified fitment on this page — 4 part types and 6 brands, covering both the 848cc L4 and the 948cc L4. Each part includes a manufacturer part number and application notes.
On the 1959 Morris Minor, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. 10 parts of the 12 listed are Extension Housing Seal (4 parts), Fluid Pan Gasket (3 parts) and Fluid Pump Seal (3 parts). The other 1 part type covers the remaining 2 parts.
The 1959 Morris Minor was sold with both the 848cc L4 and the 948cc L4. All 12 parts on this page fit every engine.
The most listed brands for 1959 Morris Minor automatic transmission parts are NATIONAL (4 parts), WJB / INMOTION PARTS (4 parts) and FEL-PRO (1 part), plus 3 more brands.
Each part number listed for the 1959 Morris Minor opens a page with every vehicle that part fits.
Extension Housing Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Fits: all 1959 Minor engines | 7300S | 🇺🇸 US | Borg Warner trans.Long Boot Style | View on Amazon |
| NATIONAL Fits: all 1959 Minor engines | 5203 | 🇺🇸 US | Includes Bushing | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1959 Minor engines | WS7300S | 🇺🇸 US | Borg Warner trans.Long Boot Style | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1959 Minor engines | WS5203 | 🇺🇸 US | with Borg-Warner DG200 Transmission | 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.
4 Extension Housing Seal parts are listed for the 1959 Morris Minor, from NATIONAL and WJB / INMOTION PARTS. All of them fit every engine offered in the 1959 Minor.
This group includes NATIONAL 7300S, NATIONAL 5203 and WJB / INMOTION PARTS WS7300S and the remaining parts above.
Fluid Pan Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Fits: all 1959 Minor engines | TOS18106 | 🇺🇸 US | View on Amazon | |
| MAHLE / CLEVITE Fits: all 1959 Minor engines | W38987 | 🇺🇸 US | Cork-RubberAutomatic Transmission Oil Pan Gasket | View on Amazon |
| VICTOR REINZ Fits: all 1959 Minor engines | 711496800 | 🇺🇸 US | 14 Bolt | 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.
3 Fluid Pan Gasket parts for the 1959 Morris Minor come from 3 brands — FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ. Every part fits both the 848cc L4 and the 948cc L4.
Part numbers include FEL-PRO TOS18106, MAHLE / CLEVITE W38987 and VICTOR REINZ 711496800.
Fluid Pump Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Fits: all 1959 Minor engines | 99199 | 🇺🇸 US | Borg Warner Trans. | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1959 Minor engines | WS99199 | 🇺🇸 US | Shaft Maximum Diameter (In): 2.0030000000000001 In | View on Amazon |
This table covers the precision wear sleeves used to restore a transmission pump seal surface.
2 Fluid Pump Repair Sleeve parts are listed for the 1959 Morris Minor, from NATIONAL and WJB / INMOTION PARTS. All of them fit every engine offered in the 1959 Minor.
Listed part numbers: NATIONAL 99199 and WJB / INMOTION PARTS WS99199.
Fluid Pump Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: all 1959 Minor engines | NS331107N | 🇺🇸 US | Front | View on Amazon |
| NATIONAL Fits: all 1959 Minor engines | 331107N | 🇺🇸 US | FrontBorg Warner Trans. | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1959 Minor engines | WS331107N | 🇺🇸 US | FrontBorg Warner 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 1959 Morris Minor, from BCA, NATIONAL and WJB / INMOTION PARTS. All of them fit every engine offered in the 1959 Minor.
Part numbers include BCA NS331107N, NATIONAL 331107N and WJB / INMOTION PARTS WS331107N.
Buying Automatic Transmission Parts for a 1959 Morris Minor
On this vehicle, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts.
- You do not need to pick an engine: every automatic transmission part on this page fits both the 848cc L4 and the 948cc L4.
- 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: Extension Housing Seal and Fluid Pan Gasket .
Frequently Asked Questions
How many automatic transmission parts fit the 1959 Morris Minor?
Our catalog currently lists 12 automatic transmission parts for the 1959 Morris Minor across 4 subcategories and 6 brands, covering both the 848cc L4 and the 948cc L4. Each part is matched to the engine(s) it fits.
Do automatic transmission parts differ between 1959 Morris Minor engines?
No. On this page every automatic transmission part fits both the 848cc L4 and the 948cc L4. You do not need to pick an engine to choose the right row — use the notes for position and trim.
What are the signs of automatic transmission problems on a 1959 Morris Minor?
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 1959 Morris Minor 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 1959 Morris Minor?
Every part on this page already fits both the 848cc L4 and the 948cc L4. 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 1959 Morris Minor
Automatic Transmission Parts for Other Morris Minor Years
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