This page lists 16 engine parts for the 1966 Lotus Elan, across 5 part types, covering the 1.6L L4 engine. Every part shows its brand, manufacturer part number and fitment notes.
The engine on the 1966 Lotus Elan covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components. The largest groups are Crankshaft Seal (5 parts), Crankshaft Repair Sleeve (4 parts) and Piston Ring (4 parts). The other 2 part types cover the remaining 3 parts.
Every part on this page is matched to the 1.6L L4 — the only engine offered in the 1966 Lotus Elan.
The most listed brands for 1966 Lotus Elan engine parts are HASTINGS MANUFACTURING (4 parts), NATIONAL (3 parts) and SCHAEFFLER (3 parts), plus 5 more brands. Quality grades include Economy and Standard Replacement.
1 part on this 1966 Lotus Elan 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.
Crankshaft Main Bearing Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER | WS3393 | 🇺🇸 US 🇨🇦 CA | Rear Main SealVITON TYPE | View on Amazon |
This table covers the gaskets that seal the Crankshaft Main Bearing. 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.
This group shows a single part: ULTRA-POWER WS3393.
Crankshaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL | 99237 | 🇺🇸 US | Rear | View on Amazon |
| SCHAEFFLER | SR3521 | 🇺🇸 US | Rear3.486 In Outside Diameter | View on Amazon |
| SCHAEFFLER | SS3474 | 🇺🇸 US | Front | View on Amazon |
| WJB / INMOTION PARTS | 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 1966 Lotus Elan, from SCHAEFFLER, NATIONAL and WJB / INMOTION PARTS.
This group includes NATIONAL 99237, SCHAEFFLER SR3521 and SCHAEFFLER SS3474 and the remaining parts above.
Crankshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular | WS3393 | 🇺🇸 US | RearViton Type | View on Amazon |
| BCA | NS3393 | 🇺🇸 US | RearViton Type | View on Amazon |
| NATIONAL | 3393 | 🇺🇸 US | RearViton Type | View on Amazon |
| NATIONAL | 3394 | 🇺🇸 US | Front | View on Amazon |
| SCHAEFFLER | 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 1966 Lotus Elan, from NATIONAL, WJB / INMOTION PARTS, BCA and 1 other brand. WJB / INMOTION PARTS WS3393 carries the "Popular" badge.
Listed part numbers: WJB / INMOTION PARTS WS3393, BCA NS3393 and NATIONAL 3393, plus the other parts above.
Oil Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND | 85300 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HASTINGS / BALDWIN | LF172 | 🇺🇸 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 1966 Lotus Elan, from FAMOUS BRAND and HASTINGS / BALDWIN.
In the Economy grade, FAMOUS BRAND supplies 1 part: the catalog's value-priced group. A representative part number is FAMOUS BRAND 85300.
The Standard Replacement section lists 1 option from HASTINGS / BALDWIN — built to original-equipment specification. HASTINGS / BALDWIN LF172 is listed in this group.
Part numbers include FAMOUS BRAND 85300 and HASTINGS / BALDWIN LF172.
Piston Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HASTINGS MANUFACTURING | 5909 | 🇺🇸 US | Full SetPlain Cast Top Ring | View on Amazon |
| HASTINGS MANUFACTURING | 2C5909 | 🇺🇸 US | Full SetTop Ring Surface Treatment: Triple Chrome | View on Amazon |
| HASTINGS MANUFACTURING | 2C5909S | 🇺🇸 US | 1 Cylinder SetChrome Top Ring | View on Amazon |
| HASTINGS MANUFACTURING | 5909S | 🇺🇸 US | 1 Cylinder SetFor 2 Ring Piston | View on Amazon |
This table covers the rings that seal each piston to the cylinder wall.
4 Piston Ring parts for the 1966 Lotus Elan come from HASTINGS MANUFACTURING.
Listed part numbers: HASTINGS MANUFACTURING 5909, HASTINGS MANUFACTURING 2C5909 and HASTINGS MANUFACTURING 2C5909S, plus the other parts above.
Buying Engine Parts for a 1966 Lotus Elan
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 1.6L L4 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 1966 Lotus Elan?
Our catalog currently lists 16 engine parts for the 1966 Lotus Elan across 5 subcategories and 8 brands, covering the 1.6L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of engine problems on a 1966 Lotus Elan?
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 1966 Lotus Elan 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 1966 Lotus Elan?
Every part on this page is matched to the 1.6L L4 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 1966 Lotus Elan
Engine Parts for Other Lotus Elan 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.