This is for a Comprehensive 4-Pack Master Suspension Kit designed for heavy-duty applications on Kenworth and Peterbilt trucks. Ideal for servicing a full tandem axle, it features 4 Genuine Firestone Air Springs and 8 U-Bolts, along with 4 complete sets of mounting hardware and bushings.
Kit Components: This massive configuration provides everything needed for a complete overhaul: 4 air springs, 8 U-bolts, 4 bushing kits, 4 mounting studs, and 4 swivel fittings.
RB268 Bushing: Precision-engineered and rigorously tested to provide reliable replacement. Features durable construction manufactured to strict standards using sturdy, safe materials.
| Part Number | W01-358-8864 |
|---|---|
| Type | Rolling Lobe |
| Design Height | 16.00" |
| Load @ 100 PSI | 7100 lbs |
| Top Plate | 9.00" Dia | 3 Studs | 6.20" C to C |
| Bottom Plate | 8.07" Dia | 1 Stud | Plastic Type |
| Type | Rubber (RB) - Type 12 |
|---|---|
| Outside Diameter (A) | 2.5 in |
| Length (C) | 7.5 in |
| Inside Diameter (D) | 21 mm (0.840 in) |
| Package Contents | 4 Kits Included |
| Notes | High Confinement; Antiwalk-out |
| Dimensions | 7/8" Dia x 3-1/16" Width x 14-1/2" Length |
|---|---|
| Grade | Grade 8 (Round Bend) |
| Air Spring | 4x Firestone 8864 |
|---|---|
| U-Bolts | 8x 361-374 |
| Bushing | 4x RB268 (Set) |
| Stud | 4x MPB7546 |
| Fitting | 4x 177.12C716D |
MASTER KIT:
This kit contains 4 of each component (8 U-Bolts) for a complete multi-axle service.
Air Spring: Goodyear 1R12-1097, Econoride 566.ER8864, Contitech 9 10-19 P 898
Bushing: Hendrickson 51752, Freightliner 16-16412-000, Navistar 3538115C1
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