Recall 78V159000: 1978 Harley-Davidson FLH and 1 other model
- Report received
- Jul 19, 1978
- Manufacturer
- Harley-davidson motor co.
- Potentially affected
- 342vehicles
- Model years
- 1978
Check your own vehicle. A recall applies only to vehicles within the affected build range. Enter your VIN at nhtsa.gov/recalls. Recall repairs are free at a franchised dealer.
What NHTSA recorded
The involved motorcycles were manufactured with front brake master cylinders in which the plunger piston bore diameter was honed .015 inches over maximum specifications. This oversized bore results in a poor fit between the elastomeric piston cup and the cylinder bore, which allows fluid leakage from the hydraulic system.
Remedy
Dealer will inspect and, if necessary, replace the front brake master cylinder assembly at no cost to owner.
Affected model years
Pages for each model year show complaints, parts, mileage and other recalls.
- 1978 Harley-Davidson FLH0 complaints
- 1978 Harley-Davidson FXS0 complaints
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.