This page lists 23 automatic transmission parts for the 1969 Checker Aerobus, across 5 part types, covering all 4 engine options (4.1L 250cid L6, 5.0L 307cid V8, 5.3L 327cid V8 and 5.7L 350cid V8). Every part shows its brand, manufacturer part number and fitment notes.
On the 1969 Checker Aerobus, 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 Extension Housing Seal (7 parts), Fluid Pump Seal (6 parts) and Fluid Pan Gasket (4 parts). The other 2 part types cover the remaining 6 parts.
The 1969 Checker Aerobus was sold with 4 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 1969 Checker Aerobus automatic transmission parts are WJB / INMOTION PARTS (7 parts), NATIONAL (5 parts) and BCA (3 parts), plus 6 more brands.
4 parts on this 1969 Checker Aerobus page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including NATIONAL 9449 (Extension Housing Seal) and NATIONAL 6712NA (Fluid Pump Seal). Click any part number to see every vehicle that part fits.
Extension Housing Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular Fits: 5.7L 350cid V8 | 9449 | 🇺🇸 US | with 3-Speed General Motors THM400 Transmission | View on Amazon |
| SCHAEFFLER Popular Fits: 5.7L 350cid V8 | SS2960 | 🇺🇸 US | Type of construction: FmsaMetal, Spring, Auxiliary Lip | View on Amazon |
| BCA Fits: 5.7L 350cid V8 | NS473234 | 🇺🇸 US | with T12 Transmission Code | View on Amazon |
| NATIONAL Fits: 5.7L 350cid V8 | 473234 | 🇺🇸 US | with 3-Speed Borg Warner T12 Transmission | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | WS473234 | 🇺🇸 US | with 3-Speed Borg Warner T12 Transmission | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | WS9449 | 🇺🇸 US | Width (In): 0.58199999999999996 In | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | WS5208 | 🇺🇸 US | Material: NitrileWidth (In): 1 in | 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.
7 Extension Housing Seal parts are listed for the 1969 Checker Aerobus, from WJB / INMOTION PARTS, NATIONAL, SCHAEFFLER and 1 other brand. NATIONAL 9449 carries the "Popular" badge.
Listed part numbers: NATIONAL 9449, SCHAEFFLER SS2960 and BCA NS473234, plus the other parts above.
Filter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 5.7L 350cid V8 | TF231 | 🇺🇸 US 🇨🇦 CA | GoldLength: 12 in | View on Amazon |
| WIX Fits: 5.7L 350cid V8 | 58881 | 🇺🇸 US | Class: A | View on Amazon |
This table covers the replacement filters for this application — the table heading and notes say which circuit. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for.
2 Filter parts for the 1969 Checker Aerobus come from 2 brands — ACDELCO and WIX.
Part numbers include ACDELCO TF231 and WIX 58881.
Fluid Pan Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Fits: 5.7L 350cid V8 | TOS18621 | 🇺🇸 US | GMC THM400 Automatic Transmission3 Speed | View on Amazon |
| FEL-PRO Fits: 5.7L 350cid V8 | TOS18106 | 🇺🇸 US | Borg-Warner T12 Automatic Transmission3 Speed | View on Amazon |
| VICTOR REINZ Fits: 5.7L 350cid V8 | 711496800 | 🇺🇸 US | 3 speed trans.Trans. code T12 | View on Amazon |
| VICTOR REINZ Fits: 5.7L 350cid V8 | 711493800 | 🇺🇸 US | 3 speed trans.Trans. code THM400 | 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.
4 Fluid Pan Gasket parts for the 1969 Checker Aerobus come from 2 brands — FEL-PRO and VICTOR REINZ.
This group includes FEL-PRO TOS18621, FEL-PRO TOS18106 and VICTOR REINZ 711496800 and the remaining parts above.
Fluid Pump Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: 5.7L 350cid V8 | NS88187 | 🇺🇸 US | Frontwith THM400 Transmission Code | View on Amazon |
| NATIONAL Fits: 5.7L 350cid V8 | 99187 | 🇺🇸 US | with 3-Speed General Motors THM400 Transmission | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | WS99193 | 🇺🇸 US | Frontwith 3-Speed Borg Warner T12 Transmission | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | WS99187 | 🇺🇸 US | Frontwith 3-Speed General Motors THM400 Transmission | View on Amazon |
This table covers the precision wear sleeves used to restore a transmission pump seal surface.
4 Fluid Pump Repair Sleeve parts are listed for the 1969 Checker Aerobus, from WJB / INMOTION PARTS, BCA and NATIONAL.
Listed part numbers: BCA NS88187, NATIONAL 99187 and WJB / INMOTION PARTS WS99193, plus the other parts above.
Fluid Pump Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular Fits: 5.7L 350cid V8 | 6712NA | 🇺🇸 US | Frontwith 3-Speed General Motors THM400 Transmission | View on Amazon |
| WJB / INMOTION PARTS Popular Fits: 5.7L 350cid V8 | WS6712NA | 🇺🇸 US | Frontwith 3-Speed General Motors THM400 Transmission | View on Amazon |
| BCA Fits: 5.7L 350cid V8 | NS6712NA | 🇺🇸 US | Frontwith THM400 Transmission Code | View on Amazon |
| NATIONAL Fits: 5.7L 350cid V8 | 6988H | 🇺🇸 US | Frontwith 3-Speed Borg Warner T12 Transmission | View on Amazon |
| SKF Fits: 5.7L 350cid V8 | 19240 | 🇺🇸 US | Front | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | WS6988H | 🇺🇸 US | Frontwith 3-Speed Borg Warner T12 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.
6 Fluid Pump Seal parts are listed for the 1969 Checker Aerobus, from NATIONAL, WJB / INMOTION PARTS, BCA and 1 other brand. NATIONAL 6712NA carries the "Popular" badge.
Listed part numbers: NATIONAL 6712NA, WJB / INMOTION PARTS WS6712NA and BCA NS6712NA, plus the other parts above.
Buying Automatic Transmission Parts for a 1969 Checker Aerobus
On this vehicle, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts.
- Match the engine first. Every automatic transmission part here is engine-specific; each row shows which engine(s) it fits.
- 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 Pump Seal .
Frequently Asked Questions
How many automatic transmission parts fit the 1969 Checker Aerobus?
Our catalog currently lists 23 automatic transmission parts for the 1969 Checker Aerobus across 5 subcategories and 9 brands, covering all 4 engine options (4.1L 250cid L6, 5.0L 307cid V8, 5.3L 327cid V8 and 5.7L 350cid V8). Each part is matched to the engine(s) it fits.
Do automatic transmission parts differ between 1969 Checker Aerobus engines?
Yes. Every automatic transmission part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of automatic transmission problems on a 1969 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 1969 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 1969 Checker Aerobus?
First match the engine — each row shows which engine(s) the part fits. 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 1969 Checker Aerobus
Automatic Transmission Parts for Other Checker Aerobus 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.