ShopAmerex.com · Amerex 09903 datasheet · https://shopamerex.com/products/amerex-09903-frame-assembly-for-100-lb-co2-wheeled-unit-less-wheels · Figures as published by Amerex · Verified Sep 2, 2026
Genuine Amerex service part·Part no. 09903
Amerex 09903 Frame Assembly for 100 lb CO2 Wheeled Unit, Less Wheels
Amerex 09903 is the carriage assembly without wheels for the Amerex 334, the 100 lb carbon dioxide wheeled fire extinguisher, item 2 on Parts Book printed page 21 (PDF page 23). Full overview ↓
- Free shipping (orders over $100)
- Returns per our refund policy.
Genuine Amerex part from an authorized Amerex distributor. Not a generic substitute.
Ordering parts for a service route?
Quotes for part lists, PO and tax-exempt orders, and parts not yet listed.
Which models does the Amerex 09903 fit?
Per the Amerex Parts Book · page 23| Fits | Extinguisher | UL rating | Capacity | Price | Link |
|---|---|---|---|---|---|
| Model 334 |  09331 Amerex 334 100 lb Wheeled CO2 Fire ExtinguisherParts Book printed p.21, item 2 |
20B:C | 100 lb (45.4 kg) | $5,708.00 | View |
Parts list for 50/100 lb. carbon dioxide wheeled models
Fitment per the Amerex Parts Book. Check the part number against your unit’s nameplate before ordering.
What is the Amerex 09903?
Amerex 09903 is the carriage assembly without wheels for the Amerex 334, the 100 lb carbon dioxide wheeled fire extinguisher, item 2 on Parts Book printed page 21 (PDF page 23). The wheeled catalog specifies heavy-duty steel carriages for these units; on the 334 the carriage carries two 50 lb CO2 cylinders manifolded to a common discharge hose. Wheel assemblies are ordered separately. Annual maintenance calls for checking the carriage for loose nuts, bolts, frame distortion or damage and checking the welds for damage or corrosion. Amerex requires genuine factory parts to protect the UL listing and keep the warranty in effect.
Amerex 09903 specifications
| Part number | 09903 |
|---|---|
| Description | Carriage Assembly without Wheels - 334 |
| Parts Book page | Printed page 21 (PDF page 23) |
| Diagram item | 2 |
| Models | 334 |
|---|
| Amerex item number | 09903 |
|---|
Part data as published by Amerex. Confirm against the current Parts Book revision before ordering for a unit in service.
Amerex 09903 documents
Official Amerex publications · PDF- Parts Book p. 23 Parts list for 50/100 lb carbon dioxide wheeled models 333, 334 (printed p.21)
- Owner's Service Manual — Models 333/334 Installation, operation, inspection, maintenance and recharge
- Wheeled Fire Extinguisher Catalog 333/334 specification table (printed p.10)
- Tech Tip Why genuine Amerex parts
- Warranty
Current Amerex publications, hosted on ShopAmerex so links do not break when Amerex reorganizes its site.
Other parts on Parts Book page 23
Parts list for 50/100 lb. carbon dioxide wheeled models · All 19 parts| Part no. | Part | Pack | Price | Quantity and add to cart |
|---|---|---|---|---|
| 08169 | Each | $32.99 | ||
| 09364 | Each | $395.00 | ||
| 09366 | Each | $108.00 | ||
| 09369 | Each | $39.99 | ||
| 09545 | Each | $323.00 | ||
| 09618 | Each | $13.99 | ||
| 09623-P001 | Pack of 1 | $193.00 | ||
| 09787 | Each | $21.99 |
Item numbers refer to the exploded view on the Parts Book page. Model-specific items are marked in the Amerex parts list; confirm before ordering.
Amerex 09903 questions
What extinguisher model does the Amerex 09903 carriage assembly fit?
The Amerex 334, the 100 lb carbon dioxide wheeled fire extinguisher.
Does the Amerex 09903 include wheels?
No — the Parts Book description is “Carriage Assembly without Wheels - 334”; the wheel assembly is a separate part (item 6, 16” with hub cap, washers and cotter pin, semi-pneumatic).
Can the Amerex 09903 be used on the 333 (50 lb) model?
No — the Parts Book lists it specifically for the 334; the 333 uses the separate Amerex 09891 carriage assembly.
Where is part 09903 listed in the Amerex Parts Book?
Item 2 on printed page 21 (PDF page 23) of Parts Book 27277 Rev D.
How often should the carriage assembly be inspected?
Annual maintenance calls for checking the carriage for loose nuts, bolts, frame distortion or damage and checking the welds for damage or corrosion; the monthly inspection includes the condition of the tires, carriage and hose.
How many cylinders does the Amerex 334 have?
Two 50 lb cylinders manifolded to a common discharge hose, per the owner's service manual.
What are the Amerex 334 carriages made of?
The Amerex wheeled catalog lists heavy-duty steel carriages among the 333/334 features, on 16 x 4 in semi-pneumatic wheels.
Is the Amerex 09903 a genuine Amerex part?
Yes — it is the factory carriage assembly listed in the Amerex Parts Book; Amerex states that substitute parts void the UL listing and the warranty.