ShopAmerex.com · Amerex 07389 datasheet · https://shopamerex.com/products/amerex-07389-hub-cap-with-washer-and-cotter-pin · Figures as published by Amerex · Verified Sep 2, 2026
Genuine Amerex service part·Part no. 07389
Amerex 07389 Hub Cap with Washer and Cotter Pin
Amerex 07389 is the hub cap with pin and washer (Amerex part 07389, item 21), the hardware-secured alternative to the plain 36” hub cap, part 16984, listed at the same item. Full overview ↓
- Part no.
- 07389
- Pack
- Pack of 1
- Fits
- 491, 493, 756 +7 more
- Parts Book
- Page 19
- UPS-calculated at checkout. Free shipping on orders over $100.
- Returns per our refund policy.
Genuine Amerex part from an authorized Amerex distributor. Not a generic substitute.
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Quotes for part lists, PO and tax-exempt orders, and parts not yet listed.
Which models does the Amerex 07389 fit?
Per the Amerex Parts Book · page 19| Fits | Extinguisher | UL rating | Capacity | Price | Link |
|---|---|---|---|---|---|
| Model 491 |  11677 Amerex 491 300 lb Wheeled ABC Fire ExtinguisherParts Book p.19 (PDF p.21) |
40A:320B:C | 300 lb (136.07 kg) | $9,515.00 | View |
| Model 493 |  15505 Amerex 493 300 lb Wheeled Purple K Fire ExtinguisherParts Book p.19 (PDF p.21) |
320B:C | 300 lb (136.07 kg) | $9,413.00 | View |
| Model 756 |  27061 Amerex 756 250 lb Wheeled ABC Fire ExtinguisherParts Book p.20 (PDF p.22) |
40A:160B:C | 250 lb (113.4 kg) | $11,888.00 | View |
| Model 756R |  27445 Amerex 756R 250 lb Wheeled ABC Fire ExtinguisherParts Book p.20 (PDF p.22) |
40A:160B:C | 250 lb (113.4 kg) | $12,663.00 | View |
| Model 758 |  27063 Amerex 758 250 lb Wheeled Purple K Fire ExtinguisherParts Book p.20 (PDF p.22) |
160B:C | 250 lb (113.4 kg) | $13,364.00 | View |
| Model 758R |  27064 Amerex 758R 250 lb Wheeled Purple K Fire ExtinguisherParts Book p.20 (PDF p.22) |
160B:C | 250 lb (113.4 kg) | $14,241.00 | View |
| Model 759 |  27065 Amerex 759 125 lb Wheeled Purple K Fire ExtinguisherParts Book p.20 (PDF p.22) |
120B:C | 125 lb (56.7 kg) | $12,112.00 | View |
| Model 759R |  27066 Amerex 759R 125 lb Wheeled Purple K Fire ExtinguisherParts Book p.20 (PDF p.22) |
120B:C | 125 lb (56.7 kg) | $13,335.00 | View |
| Model 680R |  10897 Amerex 680R 150 lb Wheeled Sodium Chloride Fire ExtinguisherParts Book p.23 (PDF p.25) |
150 lb | $12,075.00 | View | |
| Model 681R |  10898 Amerex 681R 250 lb Wheeled Copper Powder Fire ExtinguisherParts Book p.23 (PDF p.25) |
250 lb | $16,921.00 | View |
Parts list for 125/150 lb. dry chemical wheeled models, 110 cu. ft. nitrogen cylinder
Fitment per the Amerex Parts Book. Check the part number against your unit’s nameplate before ordering.
What is the Amerex 07389?
Amerex 07389 is the hub cap with pin and washer (Amerex part 07389, item 21), the hardware-secured alternative to the plain 36” hub cap, part 16984, listed at the same item. The Parts Book carries it on the same five pages: the 110 cu. ft. wheeled page for models 470 and 472, the 55 cu. ft. page for 491 and 493, the High Performance and Z-Series page for 573, 575, 690, 756, 758 and 759, the Argon Class D page for 680R and 681R, and the Halotron I page for B675. The Parts Book notice states Amerex replacement parts must be used to protect the UL listing and keep the warranty in effect.
Amerex 07389 specifications
| Part number | 07389 |
|---|---|
| Description | Hub Cap with Pin and Washer |
| Parts Book page | Printed p.17 (PDF p.19) |
| Diagram item | 21 |
| Pack quantity | 1 |
| Models | 470, 472, 491, 493, 573, 575, 690, 756, 758, 759, 680R, 681R, B675 |
|---|
| Amerex item number | 07389 |
|---|
Part data as published by Amerex. Confirm against the current Parts Book revision before ordering for a unit in service.
Amerex 07389 documents
Official Amerex publications · PDF- Parts Book p. 19 Parts list for 125/150 lb dry chemical, 110 cu. ft. nitrogen cylinder wheeled models 467, 469, 470, 472
- Owner's Service Manual (05605) Wheeled 125/150 lb N2 cylinder operated - models 450/452/467/469/470/472
- Owner's Service Manual (05614) Wheeled 300/350 lb N2 cylinder operated - models 491/492/493
- Owner's Service Manual (27085) Z-Series high performance wheeled dry chemical
- Owner's Service Manual (05620) Wheeled 150/250 lb Class D - models 680/681
- Tech Tip - Amerex Products Need Amerex Parts Why genuine Amerex parts
- Amerex Warranty Statement
Current Amerex publications, hosted on ShopAmerex so links do not break when Amerex reorganizes its site.
Other parts on Parts Book page 19
Parts list for 125/150 lb. dry chemical wheeled models, 110 cu. ft. nitrogen cylinder · All 29 parts| Part no. | Part | Pack | Price | Quantity and add to cart |
|---|---|---|---|---|
| 02234 | Pack of 1 | $113.00 | ||
| 02235 | Pack of 1 | $1,152.00 | ||
| 02272-P001 | Pack of 1 | $5.99 | ||
| 04128 | Pack of 1 | $1,606.00 | ||
| 04444 | Pack of 1 | $69.99 | ||
| 04523 | Pack of 1 | $28.99 | ||
| 06032 | Pack of 1 | $88.99 | ||
| 06993 | Pack of 1 | $176.00 |
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 07389 questions
What does the Amerex 07389 hub cap fit?
The same 36”-wheel families as part 16984: models 470 and 472, 491 and 493, the High Performance and Z-Series models 573, 575, 690, 756, 758 and 759, the Argon-charged 680R and 681R, and the Halotron I model B675.
How is it different from part 16984?
It includes a washer and pin; 16984 is the plain hub cap listed at the same item number.
Does it cover the R versions of the Z-Series models?
Yes - that page names 756R, 758R and 759R as the vulcanized rubber wheel versions of the same models.
Does it fit the 16”-wheel models?
No - models 467 and 469 use the 16” hub cap, Amerex part 04945-P.
Is the description the same on every page?
The wording varies: Hub Cap with Pin and Washer on printed p.17, Hub Cap with Washer and Cotter Pin on p.19 and p.20, and Hub Cap, Washer and Pin - 36” Wheels on p.23.
Where is it in the Parts Book?
Item 21 on printed p.17 and p.23, item 23 on p.19, item 9 on p.20 and item 9 on p.25.
Why use the genuine Amerex part?
The Parts Book notice states the Amerex warranty is voided by generic, off-the-shelf or substitute parts, and that failure to use Amerex replacement parts could cause the extinguisher to malfunction.