16 Automatic transmission parts are listed for the 1973 Citroen SM, in 4 part types, covering both the 2.7L V6 and the 3.0L V6. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 1973 Citroen SM, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. 14 parts of the 16 listed are Filter (7 parts), Extension Housing Seal (5 parts) and Extension Housing Bushing (2 parts). The other 1 part type covers the remaining 2 parts.
The 1973 Citroen SM was sold with both the 2.7L V6 and the 3.0L V6. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
5 brands supply automatic transmission parts for the 1973 Citroen SM, led by ATP (8 parts), PIONEER (5 parts) and FAMOUS BRAND (1 part), plus 2 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1973 Citroen SM. 3 parts have it, including PIONEER 759016 (Extension Housing Seal) and ATP JX151 (Filter). Each part number opens a page with every vehicle that part fits.
Extension Housing Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ATP Fits: 2.7L V6 | FB12 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PIONEER Fits: 2.7L V6 | 755176 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Extension Housing bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.
2 Extension Housing Bushing parts are listed for the 1973 Citroen SM, from ATP and PIONEER.
This group includes ATP FB12 and PIONEER 755176.
Extension Housing Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PIONEER Popular Fits: 2.7L V6 | 759016 | 🇺🇸 US 🇨🇦 CA | without Bootwith Flange | View on Amazon |
| ATP Fits: 2.7L V6 | RO4 | 🇺🇸 US 🇨🇦 CA | Trans. code BW351-61/64" O.D. | View on Amazon |
| ATP Fits: 2.7L V6 | HO9 | 🇺🇸 US 🇨🇦 CA | without Bootwith Flange | View on Amazon |
| ATP Fits: 2.7L V6 | KO3 | 🇺🇸 US 🇨🇦 CA | Outer Diameter: 2.25" | View on Amazon |
| PIONEER Fits: 2.7L V6 | 759045 | 🇺🇸 US 🇨🇦 CA | Outer Diameter: 2.25" | 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.
5 Extension Housing Seal parts for the 1973 Citroen SM come from 2 brands — ATP and PIONEER. The "Popular" part is PIONEER 759016.
Part numbers include PIONEER 759016, ATP RO4 and ATP HO9, among others listed above.
Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND Fits: 2.7L V6 | 85622 | 🇺🇸 US 🇨🇦 CA | Automatic Transmission Filter | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ATP Popular Fits: 2.7L V6 | JX151 | 🇺🇸 US 🇨🇦 CA | In-Line Filter KitInline Cooler Filter | View on Amazon |
| ATP Popular Fits: 2.7L V6 | IL150 | 🇺🇸 US 🇨🇦 CA | In-Line Filter KitInline Cooler Filter | View on Amazon |
| ATP Fits: 2.7L V6 | JX150 | 🇺🇸 US 🇨🇦 CA | In-Line Filter KitIncludes: (2) Hoses, (4) Clamps | View on Amazon |
| FRAM Fits: 2.7L V6 | P8427 | 🇺🇸 US 🇨🇦 CA | Spin-OnIncludes Gasket | View on Amazon |
| HASTINGS / BALDWIN Fits: 2.7L V6 | HF978 | 🇺🇸 US 🇨🇦 CA | Spin-On | View on Amazon |
| PIONEER Fits: 2.7L V6 | 745119 | 🇺🇸 US 🇨🇦 CA | Inline Cooler FilterIn-Line Filter Kit | 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.
7 Filter parts are listed for the 1973 Citroen SM, from ATP, FAMOUS BRAND, FRAM and 2 other brands. ATP JX151 carries the "Popular" badge.
In the Economy grade, FAMOUS BRAND supplies 1 part: the catalog's value-priced group. A representative part number is FAMOUS BRAND 85622.
The Standard Replacement section lists 6 options from ATP, FRAM, HASTINGS / BALDWIN and 1 other brand — built to original-equipment specification. ATP JX151 is listed in this group.
Part numbers include ATP JX151, FAMOUS BRAND 85622 and ATP IL150, among others listed above.
Fluid Pump Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ATP Fits: 2.7L V6 | RO1 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PIONEER Fits: 2.7L V6 | 759043 | 🇺🇸 US 🇨🇦 CA | 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.
2 Fluid Pump Seal parts for the 1973 Citroen SM come from 2 brands — ATP and PIONEER.
Listed part numbers: ATP RO1 and PIONEER 759043.
Buying Automatic Transmission Parts for a 1973 Citroen SM
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: Filter and Extension Housing Seal .
Frequently Asked Questions
How many automatic transmission parts fit the 1973 Citroen SM?
Our catalog currently lists 16 automatic transmission parts for the 1973 Citroen SM across 4 subcategories and 5 brands, covering both the 2.7L V6 and the 3.0L V6. Each part is matched to the engine(s) it fits.
Do automatic transmission parts differ between 1973 Citroen SM 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 1973 Citroen SM?
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 1973 Citroen SM 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 1973 Citroen SM?
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 1973 Citroen SM
Automatic Transmission Parts for Other Citroen SM Years
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