The Astro Pneumatic Heavy-Duty Grade 9 Master FWD Bearing Adapter Kit with Thrust Bearing (78825HD) is a professional-grade wheel bearing service solution engineered for demanding shop environments. Designed to replace wheel bearings on front-wheel-drive vehicles while keeping the strut assembly and steering knuckle in place, this master kit eliminates the need for wheel alignment after service. The set features forged cups and adapters, a heavy-duty Grade 9 drive bolt, and a 7/8" thrust bearing originally developed for use on 18-wheelers, delivering superior durability and performance far beyond standard off-the-shelf kits. A gold zinc-chromate coating on all components ensures long-lasting corrosion resistance under professional use conditions.
Features
Forged cups and adapters paired with a 7/8" HD thrust bearing originally designed for use on 18-wheelers, replacing traditional washers for superior strength
Heavy-duty Grade 9 drive bolt with 7/8" diameter and 1.25" hex drive for unmatched durability under high-torque use
Integrated thrust bearing significantly reduces friction, allowing impact wrenches to operate dramatically more effectively
Gold zinc-chromate plating on all components provides a longer-lasting, corrosion-resistant finish
Keeps the strut assembly and steering knuckle in place during service, eliminating the need for wheel alignment after bearing replacement
Master set configuration covers a wide range of FWD vehicle applications; spray lubricate bearing and grease bolt before use
Specifications
Material: Steel
Drive Bolt (Sliding Screw): Grade 9, 7.5" Long x 0.875" Diameter x 1.25" Hex
Nut: Grade 9, 3" Long x 0.875" I.D. x 1.25" Hex
Sleeve Plate Size: 3" O.D. x 2.5" Long
Sleeve Sizes: 2.18", 2.50", 2.62", 2.78", 2.82", 2.88"
Bearing I.D.: 7/8"
Finish: Gold Zinc-Chromate
Includes
Forged bearing cups and adapters in multiple sizes
6 sleeves (2.18", 2.50", 2.62", 2.78", 2.82", 2.88")
Sleeve plates (3" O.D. x 2.5" Long)
Grade 9 7/8" thread drive bolt (GR9, 7.5" Long)
Grade 9 hex nut (3" Long x 0.875" I.D. x 1.25" Hex)
Heavy-duty 7/8" I.D. thrust bearing
Blow-molded storage case
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