This page lists 16 engine parts for the 1974 Lotus Seven, across 6 part types, covering both the 1.3L L4 and the 1.6L L4. Every part shows its brand, manufacturer part number and fitment notes.
On the 1974 Lotus Seven, 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. 11 parts of the 16 listed are Crankshaft Seal (5 parts), Crankshaft Repair Sleeve (4 parts) and Connecting Rod Bearing (2 parts). The other 3 part types cover the remaining 5 parts.
The 1974 Lotus Seven was sold with both the 1.3L L4 and the 1.6L L4. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 1974 Lotus Seven engine parts are KING ENGINE BEARINGS (4 parts), NATIONAL (3 parts) and SCHAEFFLER (3 parts), plus 5 more brands. Quality grades include Economy and Standard Replacement.
1 part on this 1974 Lotus Seven page carries a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — WJB / INMOTION PARTS WS3393 (Crankshaft Seal). Click any part number to see every vehicle that part fits.
Camshaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DURA-BOND Fits: 1.3L L4 | CH8 | 🇺🇸 US | Ford engine | View on Amazon |
This table covers the Camshaft bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
This group shows a single part: DURA-BOND CH8.
Connecting Rod Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Fits: 1.3L L4 | CR410XP | 🇺🇸 US | Race bearings, Trimetal [Pmax Black]Set | View on Amazon |
| KING ENGINE BEARINGS Fits: 1.3L L4 | CR410XPX | 🇺🇸 US | SetTrimetal | View on Amazon |
This table covers the bearings in the connecting-rod big ends. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
2 Connecting Rod Bearing parts for the 1974 Lotus Seven come from KING ENGINE BEARINGS.
Part numbers include KING ENGINE BEARINGS CR410XP and KING ENGINE BEARINGS CR410XPX.
Crankshaft Main Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Fits: 1.3L L4 | MB512XP | 🇺🇸 US | SetTrimetal | View on Amazon |
| KING ENGINE BEARINGS Fits: 1.3L L4 | MB512XPX | 🇺🇸 US | SetTrimetal | View on Amazon |
This table covers the main bearings that support the crankshaft in the block. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
KING ENGINE BEARINGS supplies both parts for the 1974 Lotus Seven.
This group includes KING ENGINE BEARINGS MB512XP and KING ENGINE BEARINGS MB512XPX.
Crankshaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Fits: 1.6L L4 | 99237 | 🇺🇸 US | Rear | View on Amazon |
| SCHAEFFLER Fits: 1.6L L4 | SR3521 | 🇺🇸 US | Rear3.486 In Outside Diameter | View on Amazon |
| SCHAEFFLER Fits: 1.6L L4 | SS3474 | 🇺🇸 US | Front | View on Amazon |
| WJB / INMOTION PARTS Fits: 1.6L L4 | WS99237 | 🇺🇸 US | Rear | View on Amazon |
This table covers the sleeves used to restore a grooved crankshaft seal surface.
4 Crankshaft Repair Sleeve parts are listed for the 1974 Lotus Seven, from SCHAEFFLER, NATIONAL and WJB / INMOTION PARTS.
Part numbers include NATIONAL 99237, SCHAEFFLER SR3521 and SCHAEFFLER SS3474, among others listed above.
Crankshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular Fits: 1.6L L4 | WS3393 | 🇺🇸 US | RearViton Type | View on Amazon |
| BCA Fits: 1.6L L4 | NS3393 | 🇺🇸 US | RearViton Type | View on Amazon |
| NATIONAL Fits: 1.6L L4 | 3393 | 🇺🇸 US | RearViton Type | View on Amazon |
| NATIONAL Fits: 1.6L L4 | 3394 | 🇺🇸 US | Front | View on Amazon |
| SCHAEFFLER Fits: 1.6L L4 | SS3211 | 🇺🇸 US | Rear10.16 mm Width | 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.
5 Crankshaft Seal parts are listed for the 1974 Lotus Seven, from NATIONAL, WJB / INMOTION PARTS, BCA and 1 other brand. WJB / INMOTION PARTS WS3393 carries the "Popular" badge.
This group includes WJB / INMOTION PARTS WS3393, BCA NS3393 and NATIONAL 3393 and the remaining parts above.
Oil Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ECOGARD Fits: 1.3L L4 | X252 | 🇺🇸 US | Conventional Media | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HASTINGS / BALDWIN Fits: 1.3L L4 | LF493 | 🇺🇸 US | View on Amazon |
This table covers the oil filters that screw onto this engine's filter mount. Typical signs include low oil pressure after a service, or a filter that will not spin off because the old gasket stayed on the block. Lube the new gasket and tighten to the spec on the box; a double-gasket install dumps the sump on the first drive.
2 Oil Filter parts are listed for the 1974 Lotus Seven, from ECOGARD and HASTINGS / BALDWIN.
In the Economy grade, ECOGARD supplies 1 part: the catalog's value-priced group. A representative part number is ECOGARD X252.
The Standard Replacement section lists 1 option from HASTINGS / BALDWIN — built to original-equipment specification. HASTINGS / BALDWIN LF493 is listed in this group.
Listed part numbers: ECOGARD X252 and HASTINGS / BALDWIN LF493.
Buying Engine Parts for a 1974 Lotus Seven
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.
- Match the engine first. Every engine 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 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 1974 Lotus Seven?
Our catalog currently lists 16 engine parts for the 1974 Lotus Seven across 6 subcategories and 8 brands, covering both the 1.3L L4 and the 1.6L L4. Each part is matched to the engine(s) it fits.
Do engine parts differ between 1974 Lotus Seven engines?
Yes. Every engine 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 engine problems on a 1974 Lotus Seven?
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 1974 Lotus Seven 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 1974 Lotus Seven?
First match the engine — each row shows which engine(s) the part fits. 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 1974 Lotus Seven
Engine Parts for Other Lotus Seven Years
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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.