5-Piece Hydroboost Seal Repair Kit for GM Ford Dodge Units
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
- Select Chevrolet and GMC vehicles with matching Bendix-style hydroboost unit
- Select Ford vehicles with matching Bendix-style hydroboost unit
- Select Dodge and Chrysler vehicles with matching Bendix-style hydroboost unit
Product Overview
Power-steering fluid at the brake booster, a wet input-rod area, or a leak between the hydroboost and master cylinder can lead to seal service once hoses, fittings, steering gear, pump, accumulator, and casting condition are checked. This small kit targets common external sealing points on matching units.
Hydroboost is a high-pressure brake-assist system. A five-seal kit is not a complete rebuild and will not repair a scored bore, worn spool, cracked housing, failed accumulator, or wrong-unit problem. Identify the booster manufacturer and compare every removed seal by size and profile.
Key Features & Performance
- Five rubber seals for compatible hydroboost service
- Targets common external leak points
- Compact repair option when the hard parts remain serviceable
- Compatible with selected Bendix-style units across several brands
Replaces Part Numbers
- 2771004
- GM-2771004
- K-777464
Common Uses
- Repairing a confirmed external hydroboost fluid leak
- Resealing a serviceable unit during master-cylinder work
- Replacing hardened seals after the booster is correctly identified
Technical Specifications
- Product Type: Hydroboost seal repair kit
- Quantity: 5 seals
- System: Hydraulic brake assist / power-steering fluid
- Scope: Partial seal service, not a complete rebuild
- Condition: New aftermarket kit
Installation & Fitment
- Identify the exact hydroboost unit before disassembly
- Depressurize the accumulator and hydraulic system safely
- Keep dirt out of every hydraulic passage
- Inspect shafts, bores, spool, housing, and accumulator
- Bleed steering and brake-assist systems and verify safe operation before road use
Compatibility Notice
Northline Parts does its best to list all known compatible models. The correct part may fit an application that is not shown above. Model year, production date, serial number, engine or equipment specification, installed options, and previous repairs can change fitment. Match the original part, reference number, dimensions, connectors, mounting points, and product photos before purchase.
Frequently Asked Questions
Q: Will this stop every hydroboost leak? A: No. It fits only matching seal locations and cannot repair damaged metal parts, hoses, fittings, or accumulators.
Q: Can I choose it by vehicle make alone? A: No. Identify the booster design and compare seal dimensions.
Q: Is professional service recommended? A: Yes. The unit affects braking and uses high-pressure hydraulic fluid.
Q: Is this an original-equipment part? A: No. This is a new aftermarket product. Brand names and part numbers are used only to identify compatible applications.
Part Summary
keywords: five piece hydroboost seal kit, 2771004 brake booster repair, GM Ford Dodge hydroboost leak, Bendix hydro boost seals, power steering fluid at brake booster
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, specifications, and application before purchase.