Product line
HD 3.0 Heavy Duty
A bigger 3.0 body on factory mounts, for heavy coaches and trucks that work hard. Best for heavy coaches and trucks carrying big loads on factory air ride.

Part numbers
Where it fits: Freightliner M2-106 (RV), Freightliner M2-112 (RV), Freightliner S2RV (RV), Freightliner Cascadia (RV), Freightliner (Semi), Freightliner M2-106/M2-112 (Commercial), SportChassis (Commercial), Summit Hauler (Commercial), Ford F-450/F-550/F-600/F-650 (Commercial), Ford F-650/F-750 (Commercial), International MV/MV607/DuraStar (Commercial)
Have the number off your old shock?
Factory, Monroe or Gabriel numbers work.
RV
HDS324502001C
Rear
HD 3.0 over inflate rear shock | Freightliner and Western Star FAS II rear air | tandem axle RVs
Fits:
- Freightliner M2 106 / M2 112 with FAS II rear air, Rear. Over inflate kit only. Tandem axle RVs
- Western Star FAS II rear air, Rear. Over inflate kit only. Tandem axle

$667 per shock
Pair: $1,334
Replaces these numbers (7)
| Brand | Number | Type |
|---|---|---|
| Freightliner | 16-18708-000 | Factory |
| Freightliner | 16-16764-000 | Factory |
| Freightliner | 16-22018-000 | Factory |
| Gabriel | 85724 | Aftermarket |
| Monroe | 65490 | Aftermarket |
| Monroe | 555048 | Aftermarket |
| Other | 471700002809 |
If your old shock has any of these numbers, this is your part.
HDS324502002C
Rear
HD 3.0 over inflate rear shock | Freightliner and Western Star FAS II rear air | single axle RVs
Fits:
- Freightliner M2 106 / M2 112 / S2RV with FAS II rear air, Rear. Over inflate kit only. Single axle RVs
- Western Star FAS II rear air, Rear. Over inflate kit only. Single axle

$667 per shock
Pair: $1,334
Replaces these numbers (7)
| Brand | Number | Type |
|---|---|---|
| Freightliner | 16-18708-000 | Factory |
| Freightliner | 16-16764-000 | Factory |
| Freightliner | 16-22018-000 | Factory |
| Monroe | 555048 | Aftermarket |
| Gabriel | 85724 | Aftermarket |
| Monroe | 65490 | Aftermarket |
| Other | 471700002809 |
If your old shock has any of these numbers, this is your part.
HDS326102001
Rear
HD 3.0 Heavy Duty factory rear air replacement
Fits:
- Nexus Ghost, 2019-2024, Rear
- Ford F-650/F-750, 2004-2015, Rear. Rear air
- International MV / MV607 / DuraStar with IROS, Rear. IROS rear, shock mounted on inside of frame

$599 per shock
Pair: $1,198
Replaces these numbers (2)
| Brand | Number | Type |
|---|---|---|
| International | 6127713C2 | Factory |
| Gabriel | 85656 | Aftermarket |
If your old shock has any of these numbers, this is your part.
Semi
HDS320202006C
Rear
HD 3.0 rear shock | Freightliner M2, SportChassis Hauler | FAS II low profile rear air
Fits:
- Freightliner M2 / M2 100 / M2 106 / M2 112, Rear. FAS II Low Profile Rear Air Suspension (18,000 to 40,000 lb)
- Freightliner MB Chassis / MT55, Rear. FAS II Low Profile Rear Air Suspension (18,000 to 40,000 lb)
- SportChassis Hauler bed, Rear. FAS II Low Profile Rear Air Suspension (18,000 to 40,000 lb)

$667 per shock
Pair: $1,334
Replaces these numbers (5)
| Brand | Number | Type |
|---|---|---|
| Freightliner | 16-18706-000 | Factory |
| Freightliner | 16-18711-000 | Factory |
| Monroe | 65489 | Aftermarket |
| Gabriel | 85331 | Aftermarket |
| Gabriel | 85335 | Aftermarket |
If your old shock has any of these numbers, this is your part.
HDS322902001C
Rear
HD 3.0 rear shock | Freightliner M2 106/112 | FAS II rear air, tandem
Fits:
- Freightliner M2 106/112, Rear. FAS II. Tandem axle RVs and heavy trucks
- Dynamax DX3, Rear. FAS II. Tandem axle
- Renegade Classic / XL, Rear. FAS II. Tandem axle

$667 per shock
Pair: $1,334
Replaces these numbers (5)
| Brand | Number | Type |
|---|---|---|
| Freightliner | 16-18708-000 | Factory |
| Freightliner | 16-16764-000 | Factory |
| Monroe | 65490 | Aftermarket |
| Monroe | 555048 | Aftermarket |
| Gabriel | 85724 | Aftermarket |
If your old shock has any of these numbers, this is your part.
HDS322902002C
Rear
HD 3.0 rear shock | Freightliner M2 106/112, S2RV | FAS II rear air, single axle
Fits:
- Freightliner M2 106/112 / S2RV, Rear. FAS II. Single axle RVs. Heavy load
- Dynamax Motorhomes, Rear. FAS II. Single axle
- Renegade Valencia / Verona / Explorer, Rear. FAS II. Single axle

$667 per shock
Pair: $1,334
Replaces these numbers (5)
| Brand | Number | Type |
|---|---|---|
| Freightliner | 16-18708-000 | Factory |
| Freightliner | 16-16764-000 | Factory |
| Monroe | 65490 | Aftermarket |
| Monroe | 555048 | Aftermarket |
| Gabriel | 85724 | Aftermarket |
If your old shock has any of these numbers, this is your part.
Get a quote for HD 3.0 Heavy Duty
Rather talk? 661-243-0020
