The 1972 Marcos GT has 8 engine parts with verified fitment on this page — 3 part types and 5 brands, covering the 3.0L L6 engine. Each part includes a manufacturer part number and application notes.
On the 1972 Marcos GT, the engine covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components. All 8 listed parts are Crankshaft Seal (4 parts), Crankshaft Repair Sleeve (3 parts) and Valve Stem Seal (1 part).
Every part on this page is matched to the 3.0L L6 — the only engine offered in the 1972 Marcos GT.
The most listed brands for 1972 Marcos GT engine parts are NATIONAL (2 parts), WJB / INMOTION PARTS (2 parts) and FEL-PRO (2 parts), plus 2 more brands.
Each part number listed for the 1972 Marcos GT opens a page with every vehicle that part fits.
Crankshaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL | 99204 | 🇺🇸 US | Front | View on Amazon |
| SCHAEFFLER | SS3586 | 🇺🇸 US | Front | View on Amazon |
| WJB / INMOTION PARTS | WS99204 | 🇺🇸 US | Front | View on Amazon |
This table covers the sleeves used to restore a grooved crankshaft seal surface.
3 Crankshaft Repair Sleeve parts are listed for the 1972 Marcos GT, from NATIONAL, SCHAEFFLER and WJB / INMOTION PARTS.
Part numbers include NATIONAL 99204, SCHAEFFLER SS3586 and WJB / INMOTION PARTS WS99204.
Crankshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | BS40433 | 🇺🇸 US | Rubber | View on Amazon |
| NATIONAL | 710190 | 🇺🇸 US | Front | View on Amazon |
| VICTOR REINZ | 191033301 | 🇺🇸 US | RubberSet | View on Amazon |
| WJB / INMOTION PARTS | WS710190 | 🇺🇸 US | Front | View on Amazon |
This table covers the front and rear seals that keep oil in at the crankshaft. 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 Crankshaft Seal parts are listed for the 1972 Marcos GT, from FEL-PRO, NATIONAL, VICTOR REINZ and 1 other brand.
Part numbers include FEL-PRO BS40433, NATIONAL 710190 and VICTOR REINZ 191033301, among others listed above.
Valve Stem Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | SS72617 | 🇺🇸 US | Set | View on Amazon |
This table covers the seals on each valve stem that control oil into the guides. 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 1972 Marcos GT — FEL-PRO SS72617.
Buying Engine Parts for a 1972 Marcos GT
On this vehicle, the engine covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components.
- Confirm you have the 3.0L L6 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 seals and gaskets for anything you open up; a timing job should always include the tensioner and guides, not just the belt or chain.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Crankshaft Seal and Crankshaft Repair Sleeve .
Frequently Asked Questions
How many engine parts fit the 1972 Marcos GT?
Our catalog currently lists 8 engine parts for the 1972 Marcos GT across 3 subcategories and 5 brands, covering the 3.0L L6 engine. Each part is matched to the engine(s) it fits.
What are the signs of engine problems on a 1972 Marcos GT?
Common symptoms include oil spots under the vehicle, blue or white exhaust smoke, ticking from the valvetrain, or coolant mysteriously disappearing. 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 seals and gaskets for anything you open up; a timing job should always include the tensioner and guides, not just the belt or chain.
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 1972 Marcos GT 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 1972 Marcos GT?
Every part on this page is matched to the 3.0L L6 engine. Then engine hard parts are unforgiving of guesswork — confirm the casting or engine code before ordering, because one model year can hide two different blocks. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1972 Marcos GT
Engine Parts for Other Marcos GT 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.