The 1959 Checker Aerobus has 16 automatic transmission parts with verified fitment on this page — 8 part types and 8 brands, covering both the 3.7L 226cid L6 and the 5.2L 318cid V8. Each part includes a manufacturer part number and application notes.
On the 1959 Checker Aerobus, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. 10 parts of the 16 listed are Fluid Pump Seal (4 parts), Extension Housing Seal (3 parts) and Fluid Pan Gasket (3 parts). The other 5 part types cover the remaining 6 parts.
The 1959 Checker Aerobus was sold with both the 3.7L 226cid L6 and the 5.2L 318cid V8. All 16 parts on this page fit every engine.
8 brands supply automatic transmission parts for the 1959 Checker Aerobus, led by WJB / INMOTION PARTS (4 parts), NATIONAL (3 parts) and BCA (2 parts), plus 5 more brands.
Each part number listed for the 1959 Checker Aerobus opens a page with every vehicle that part fits.
Extension Housing Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: all 1959 Aerobus engines | NS473234 | 🇺🇸 US | View on Amazon | |
| NATIONAL Fits: all 1959 Aerobus engines | 473234 | 🇺🇸 US | Borg Warner Trans. | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1959 Aerobus engines | WS473234 | 🇺🇸 US | Borg Warner trans.T12 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.
3 Extension Housing Seal parts for the 1959 Checker Aerobus come from 3 brands — BCA, NATIONAL and WJB / INMOTION PARTS. Every part fits both the 3.7L 226cid L6 and the 5.2L 318cid V8.
This group includes BCA NS473234, NATIONAL 473234 and WJB / INMOTION PARTS WS473234.
Fluid Pan Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Fits: all 1959 Aerobus engines | TOS18106 | 🇺🇸 US | View on Amazon | |
| MAHLE / CLEVITE Fits: all 1959 Aerobus engines | W38987 | 🇺🇸 US | Cork-RubberAutomatic Transmission Oil Pan Gasket | View on Amazon |
| VICTOR REINZ Fits: all 1959 Aerobus 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 are listed for the 1959 Checker Aerobus, from FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ. All of them fit every engine offered in the 1959 Aerobus.
This group includes FEL-PRO TOS18106, MAHLE / CLEVITE W38987 and VICTOR REINZ 711496800.
Fluid Pump Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: all 1959 Aerobus engines | WS99193 | 🇺🇸 US | FrontBorg Warner trans. | View on Amazon |
This table covers the precision wear sleeves used to restore a transmission pump seal surface.
This group shows a single part: WJB / INMOTION PARTS WS99193.
Fluid Pump Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: all 1959 Aerobus engines | NS6988H | 🇺🇸 US | Front | View on Amazon |
| NATIONAL Fits: all 1959 Aerobus engines | 6988H | 🇺🇸 US | FrontBorg Warner Trans. | View on Amazon |
| SKF Fits: all 1959 Aerobus engines | 19240 | 🇺🇸 US | Front | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1959 Aerobus engines | WS6988H | 🇺🇸 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.
4 Fluid Pump Seal parts for the 1959 Checker Aerobus come from 4 brands — BCA, NATIONAL, SKF and 1 other brand. Every part fits both the 3.7L 226cid L6 and the 5.2L 318cid V8.
This group includes BCA NS6988H, NATIONAL 6988H and SKF 19240 and the remaining parts above.
Manual Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Fits: all 1959 Aerobus engines | 7929S | 🇺🇸 US | Borg Warner Trans. | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1959 Aerobus engines | WS7929S | 🇺🇸 US | Borg Warner trans.T12 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 for the 1959 Checker Aerobus come from 2 brands — NATIONAL and WJB / INMOTION PARTS. Every part fits both the 3.7L 226cid L6 and the 5.2L 318cid V8.
Part numbers include NATIONAL 7929S and WJB / INMOTION PARTS WS7929S.
Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKF Fits: all 1959 Aerobus engines | 99193 | 🇺🇸 US | Shaft Diameter: 1.937 In | View on Amazon |
This table covers the wear sleeves used to restore a grooved seal surface.
This group shows a single part: SKF 99193.
Shift Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER Fits: all 1959 Aerobus engines | SS3644 | 🇺🇸 US | with 0.750 In Shaft | View on Amazon |
This table covers the seals at the Shift 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.
This group shows a single part: SCHAEFFLER SS3644.
Torque Converter Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER Fits: all 1959 Aerobus engines | SR3509 | 🇺🇸 US | with 1.938 In Shaft17.48 mm Width | View on Amazon |
This table covers the wear sleeves used to restore a Torque Converter seal surface.
This group shows a single part: SCHAEFFLER SR3509.
Buying Automatic Transmission Parts for a 1959 Checker Aerobus
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 3.7L 226cid L6 and the 5.2L 318cid V8.
- 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 Extension Housing Seal .
Frequently Asked Questions
How many automatic transmission parts fit the 1959 Checker Aerobus?
Our catalog currently lists 16 automatic transmission parts for the 1959 Checker Aerobus across 8 subcategories and 8 brands, covering both the 3.7L 226cid L6 and the 5.2L 318cid V8. Each part is matched to the engine(s) it fits.
Do automatic transmission parts differ between 1959 Checker Aerobus engines?
No. On this page every automatic transmission part fits both the 3.7L 226cid L6 and the 5.2L 318cid V8. 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 Checker Aerobus?
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 Checker Aerobus 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 Checker Aerobus?
Every part on this page already fits both the 3.7L 226cid L6 and the 5.2L 318cid V8. 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 Checker Aerobus
Automatic Transmission Parts for Other Checker Aerobus Years
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