3 Engine parts are listed for the 1981 Honda Prelude, in 3 part types, covering both the 1.6L L4 and the 1.8L L4. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 1981 Honda Prelude, 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 3 listed parts are Expansion Plug (1 part), Oil Drain Plug (1 part) and Oil Temperature Sender (1 part).
The 1981 Honda Prelude was sold with both the 1.6L L4 and the 1.8L L4. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
2 brands supply engine parts for the 1981 Honda Prelude, led by DORMAN (2 parts) and AUTO-TUNE (1 part).
Each part number listed for the 1981 Honda Prelude opens a page with every vehicle that part fits.
Expansion Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 1.6L L4 | 116203 | 🇺🇸 US 🇨🇦 CA | 3/8"-24 | View on Amazon |
This table covers the Expansion plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes.
One part is listed for the 1981 Honda Prelude — DORMAN 116203.
Oil Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 1.6L L4 | 090080 | 🇺🇸 US 🇨🇦 CA | M20-1.50Winged | View on Amazon |
This table covers the drain plugs in the oil pan.
This group shows a single part: DORMAN 090080.
Oil Temperature Sender
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTO-TUNE Fits: 1.6L L4 | PT3441 | 🇺🇸 US 🇨🇦 CA | with Gauge | View on Amazon |
This table covers the Oil Temperature senders.
One part is listed for the 1981 Honda Prelude — AUTO-TUNE PT3441.
Buying Engine Parts for a 1981 Honda Prelude
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: Expansion Plug and Oil Drain Plug .
Frequently Asked Questions
How many engine parts fit the 1981 Honda Prelude?
Our catalog currently lists 3 engine parts for the 1981 Honda Prelude across 3 subcategories and 2 brands, covering both the 1.6L L4 and the 1.8L L4. Each part is matched to the engine(s) it fits.
Do engine parts differ between 1981 Honda Prelude 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 1981 Honda Prelude?
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 1981 Honda Prelude 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 1981 Honda Prelude?
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 1981 Honda Prelude
Engine Parts for Other Honda Prelude 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.