2008 Harley-Davidson Flhr Engine cooling Problems
- Complaints
- 2about this part
- Share
- 14%of 14 total for the year
- Median mileage
- 2,302miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine cooling of the 2008 Harley-Davidson Flhr, 14% of the 14 complaints for this model year. Where a mileage was given, the median is 2,302 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Front cylinder head gasket failed on my 2008 h-d flhrse4 at only 1900 miles resulting in oil leak. Dealer is checking both cylinders and heads for warpage prior to replacing gaskets. This appears to be an on going issue with the 110 motors and is well documented on the various owner forums.”
NHTSA complaint #10208806, filed 2007-11, 1,880 miles“The contact owns a 2008 (na) harley davidson road king. While pulling out of a service station at 15 MPH, the contact heard a banging noise coming from the primary case. The bolt that holds the compensation brackets in the primary case came out, which caused the vehicle to stop running. He pulled off the road and had the vehicle towed. The dealer that repaired the vehicle stated that the bolt was installed improperly when it was manufactured, and the incorrect lock type was used. The failure mileage was 2,723 and current mileage was 2,900.”
NHTSA complaint #10236829, filed 2008-08, 2,723 milesRelated service bulletins
- 10254115Apr 4, 2024SERVICE BULLETIN M1612 (REV A): MILWAUKEE-EIGHT AND TWIN CAM TRANSMISSION GEAR PACKS. Purpose: Revision. Update: Notes for Table 3 and 4. * Updated: Part Numbers. This bulletin…
- 10179446Aug 19, 2020GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1100: TWIN CAM LONGBLOCK & WARRANTY ENGINE - PROGRAM UPDATES. PURPOSE: To inform dealers of certain twin cam longblock and…
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2008 | 2 | 14% |
| 1999 | 3 | 38% |
Other parts of the 2008 Harley-Davidson Flhr
4 complaintsElectrical system
3 complaintsBrakes
2 complaintsFuel system
2 complaintsSuspension
2 complaintsEngine
1 complaintsWheels
1 complaints
← All problems reported for the 2008 Harley-Davidson Flhr
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology