39 Engine parts are listed for the 1991 Geo Storm, in 10 part types, covering both the 1.6L L4 DOHC and the 1.6L L4 SOHC. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 1991 Geo Storm, 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. Most of the listed parts are Crankshaft Seal (9 parts), Camshaft Seal (8 parts) and Connecting Rod Bearing (4 parts). The other 7 part types cover the remaining 18 parts.
The 1991 Geo Storm was sold with both the 1.6L L4 DOHC and the 1.6L L4 SOHC. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
16 brands supply engine parts for the 1991 Geo Storm, led by TOPLINE (6 parts), WJB / INMOTION PARTS (4 parts) and APEX (4 parts), plus 13 more brands.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1991 Geo Storm. 4 parts have it, including BCA NS710308 (Camshaft Seal) and FEL-PRO TCS45853 (Crankshaft Seal). Each part number opens a page with every vehicle that part fits.
Camshaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: 1.6L L4 DOHC | NS99157 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| NATIONAL Fits: 1.6L L4 DOHC | 99157 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WJB / INMOTION PARTS Fits: 1.6L L4 DOHC | WS99157 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the wear sleeves used to restore a Camshaft seal surface.
3 Camshaft Repair Sleeve parts for the 1991 Geo Storm come from 3 brands — BCA, NATIONAL and WJB / INMOTION PARTS.
This group includes BCA NS99157, NATIONAL 99157 and WJB / INMOTION PARTS WS99157.
Camshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Popular Fits: 1.6L L4 DOHC | NS710308 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| NATIONAL Popular Fits: 1.6L L4 DOHC | 710308 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| APEX Fits: 1.6L L4 DOHC | ATC3010 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| BECK/ARNLEY Fits: 1.6L L4 DOHC | 0523423 | 🇺🇸 US 🇨🇦 CA | Engine Design: LW0 | View on Amazon |
| ITM ENGINE COMPONENTS Fits: 1.6L L4 DOHC | 1500112 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKF Fits: 1.6L L4 DOHC | 11804 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| TIMKEN Fits: 1.6L L4 DOHC | 1217 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WJB / INMOTION PARTS Fits: 1.6L L4 DOHC | WS710308 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the seals at each camshaft end. 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.
8 Camshaft Seal parts for the 1991 Geo Storm come from 8 brands — BCA, NATIONAL, APEX and 5 other brands. The "Popular" part is BCA NS710308.
Part numbers include BCA NS710308, NATIONAL 710308 and APEX ATC3010, among others listed above.
Connecting Rod
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TOPLINE Fits: 1.6L L4 DOHC | CRIS8 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the connecting rods between each piston and the crankshaft.
One part is listed for the 1991 Geo Storm — TOPLINE CRIS8.
Connecting Rod Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS Fits: 1.6L L4 DOHC | 4B9450 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| KING ENGINE BEARINGS Fits: 1.6L L4 DOHC | CR4004AM | 🇺🇸 US 🇨🇦 CA | SetBimetal (Aluminum Base) | View on Amazon |
| MAHLE / CLEVITE Fits: 1.6L L4 DOHC | CB1478P | 🇺🇸 US 🇨🇦 CA | P Series (Tri-Metal)Pair | View on Amazon |
| TOPLINE Fits: 1.6L L4 DOHC | RBIS3 | 🇺🇸 US 🇨🇦 CA | Set | 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.
4 Connecting Rod Bearing parts are listed for the 1991 Geo Storm, from ITM ENGINE COMPONENTS, KING ENGINE BEARINGS, MAHLE / CLEVITE and 1 other brand.
This group includes ITM ENGINE COMPONENTS 4B9450, KING ENGINE BEARINGS CR4004AM and MAHLE / CLEVITE CB1478P and the remaining parts above.
Conversion / Lower Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 1.6L L4 DOHC | 54069600 | 🇺🇸 US 🇨🇦 CA | Engine # LW0 | View on Amazon |
| APEX Fits: 1.6L L4 DOHC | ACS3001 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FEL-PRO Fits: 1.6L L4 DOHC | CS9685 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| TOPLINE Fits: 1.6L L4 DOHC | CBSIS8 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers lower / conversion gasket sets for oil-pan and related joints. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration.
4 Conversion / Lower Gasket Set parts are listed for the 1991 Geo Storm, from AJUSA, APEX, FEL-PRO and 1 other brand.
Listed part numbers: AJUSA 54069600, APEX ACS3001 and FEL-PRO CS9685, plus the other parts above.
Crankshaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TOPLINE Fits: 1.6L L4 DOHC | CSIS8 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the crankshafts that turn piston motion into rotation.
One part is listed for the 1991 Geo Storm — TOPLINE CSIS8.
Crankshaft Main Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS Fits: 1.6L L4 DOHC | 5M9423 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| MAHLE / CLEVITE Fits: 1.6L L4 DOHC | MS1820A | 🇺🇸 US 🇨🇦 CA | A Series (Aluminum)Set | View on Amazon |
| TOPLINE Fits: 1.6L L4 DOHC | TWIS8 | 🇺🇸 US 🇨🇦 CA | Thrust Bearing | View on Amazon |
| TOPLINE Fits: 1.6L L4 DOHC | MBIS8 | 🇺🇸 US 🇨🇦 CA | Set | 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.
4 Crankshaft Main Bearing parts for the 1991 Geo Storm come from 3 brands — TOPLINE, ITM ENGINE COMPONENTS and MAHLE / CLEVITE.
This group includes ITM ENGINE COMPONENTS 5M9423, MAHLE / CLEVITE MS1820A and TOPLINE TWIS8 and the remaining parts above.
Crankshaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Fits: 1.6L L4 DOHC | 99128 | 🇺🇸 US 🇨🇦 CA | Front0.315 IN Width | View on Amazon |
| SCHAEFFLER Fits: 1.6L L4 DOHC | SR3467 | 🇺🇸 US 🇨🇦 CA | Front11.13 mm Width | View on Amazon |
| TIMKEN Fits: 1.6L L4 DOHC | KWK99128 | 🇺🇸 US 🇨🇦 CA | Kwik-Sleeve | View on Amazon |
| WJB / INMOTION PARTS Fits: 1.6L L4 DOHC | WS99128 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
This table covers the sleeves used to restore a grooved crankshaft seal surface.
4 Crankshaft Repair Sleeve parts for the 1991 Geo Storm come from 4 brands — NATIONAL, SCHAEFFLER, TIMKEN and 1 other brand.
Listed part numbers: NATIONAL 99128, SCHAEFFLER SR3467 and TIMKEN KWK99128, plus the other parts above.
Crankshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular Fits: 1.6L L4 DOHC | TCS45853 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| FEL-PRO Popular Fits: 1.6L L4 DOHC | BS40524 | 🇺🇸 US 🇨🇦 CA | Rubber | View on Amazon |
| APEX Fits: 1.6L L4 DOHC | ATC3011 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| APEX Fits: 1.6L L4 DOHC | ABS300 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| CORTECO Fits: 1.6L L4 DOHC | 17198 | 🇺🇸 US 🇨🇦 CA | Seal Set1 PC RUBBER | View on Amazon |
| ITM ENGINE COMPONENTS Fits: 1.6L L4 DOHC | 1500109 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| SCHAEFFLER Fits: 1.6L L4 DOHC | SS2340 | 🇺🇸 US 🇨🇦 CA | Front1.74" O.D. X 0.24" Width | View on Amazon |
| TIMKEN Fits: 1.6L L4 DOHC | 223220 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| WJB / INMOTION PARTS Fits: 1.6L L4 DOHC | WS223220 | 🇺🇸 US 🇨🇦 CA | 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.
9 Crankshaft Seal parts for the 1991 Geo Storm come from 7 brands — FEL-PRO, APEX, CORTECO and 4 other brands. The "Popular" part is FEL-PRO TCS45853.
Listed part numbers: FEL-PRO TCS45853, FEL-PRO BS40524 and APEX ATC3011, plus the other parts above.
Cylinder Head Alignment Dowel Pin
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PIONEER Fits: 1.6L L4 DOHC | PC725 | 🇺🇸 US 🇨🇦 CA | 1/4" x 5/8" | View on Amazon |
This table covers the Cylinder Head Alignment Dowel pins.
One part is listed for the 1991 Geo Storm — PIONEER PC725.
Buying Engine Parts for a 1991 Geo Storm
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 Camshaft Seal .
Frequently Asked Questions
How many engine parts fit the 1991 Geo Storm?
Our catalog currently lists 39 engine parts for the 1991 Geo Storm across 10 subcategories and 16 brands, covering both the 1.6L L4 DOHC and the 1.6L L4 SOHC. Each part is matched to the engine(s) it fits.
Do engine parts differ between 1991 Geo Storm 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 1991 Geo Storm?
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 1991 Geo Storm 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 1991 Geo Storm?
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 1991 Geo Storm
Engine Parts for Other Geo Storm 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.