Ford 6.7L Power Stroke CP4.2 Pump. Ford’s 6.7L Power Stroke diesel engine, used in Super Duty trucks from 2011 to approximately 2019, contains the same Bosch CP4.2 high-pressure fuel pump found in GM’s Duramax lineup. The pump suffers from the same fundamental design flaw — insufficient lubricity in U.S. ULSD fuel leads to internal metal-on-metal wear, catastrophic failure, and system-wide contamination.
Unlike GM, which reached a $50 million class-action settlement in May 2025, Ford has not settled the CP4 pump lawsuit as of early 2026. The litigation — led by Hagens Berman Sobol Shapiro LLP — remains active.
Additionally, no federal safety recall has been issued specifically for the Ford 6.7 CP4 pump defect, though NHTSA has received numerous complaints.
How the CP4 Fails in Ford 6.7 Power Stroke
The failure mechanism is identical to the GM case:
- The Bosch CP4.2 uses a roller-tappet cam design and relies on diesel fuel for internal lubrication
- U.S. ULSD lacks the lubricity of European diesel, for which the pump was designed
- The roller slides rather than rolls, generating metal shavings
- Debris is distributed at high pressure (30,000+ PSI) throughout the fuel system
- Result: catastrophic contamination of injectors, fuel rails, return lines, and fuel tank
The failure can occur anywhere from 50,000 to 150,000+ miles, depending on driving conditions, fuel quality, and use of additives.
Affected Ford Vehicles
| Vehicle | Engine | Model Years |
| Ford F-250 Super Duty | 6.7L Power Stroke V8 | 2011–2019 |
| Ford F-350 Super Duty | 6.7L Power Stroke V8 | 2011–2019 |
| Ford F-450 Super Duty | 6.7L Power Stroke V8 | 2011–2019 |
| Ford F-550 Super Duty | 6.7L Power Stroke V8 | 2011–2019 |
Note on 2020+: Ford updated its high-pressure fuel pump for 2020 model year trucks. The specific CP4.2 failure mode documented in the lawsuit primarily affects 2011–2019 model years.
Ford CP4 Lawsuit — Legal Details
Case handled by: Hagens Berman Sobol Shapiro LLP (same firm as GM CP4 case) Court: U.S. District Court (Eastern District of Michigan and other venues) Status as of early 2026: Active litigation — NO settlement finalized
What the lawsuit alleges:
- Ford knowingly sold vehicles with a CP4.2 pump incompatible with U.S. ULSD
- Ford concealed the known defect from consumers
- Ford violated implied warranty of merchantability
- Ford’s response (recommending additives) acknowledged the problem without fixing it
- Owners suffered repair bills of 20,000+ without adequate remedy
Key difference from GM case: GM reached its $50 million settlement in May 2025. Ford’s case is still in litigation as of early 2026. Ford has reportedly been more resistant to settlement negotiations than GM.
Ford’s Response and TSBs
Ford has issued Technical Service Bulletins related to fuel system issues but has not issued a safety recall for the CP4 defect. Key Ford responses:
- TSB 18-2259: Addresses fuel system contamination from metal particles; instructs dealerships on inspection and replacement procedure — confirming Ford’s awareness of the failure mode
- Ford’s recommendation to customers: Use diesel fuel with lubricity additives (essentially the same response as GM)
- Ford extended warranty on some fuel system components for specific model years under certain conditions
No formal safety recall has been issued by NHTSA or Ford specifically for the CP4 pump defect as of early 2026.
Repair Costs (Ford Context)
| Repair Scope | Estimated Cost |
| Pump only (minimal contamination) | 4,500 |
| Pump + injectors | 12,000 |
| Full system: pump, injectors, rails, lines | 18,000 |
| Full system + fuel tank | 22,000+ |
| CP3 conversion kit | 4,500 |
Ford vs GM CP4 Comparison
| Factor | GM Duramax | Ford Power Stroke |
| Pump | Bosch CP4.2 (LML/LGH) | Bosch CP4.2 (6.7L PS) |
| Years affected | 2011–2016 | 2011–2019 |
| Settlement | $50M (May 2025, FINAL) | Not settled — active litigation |
| Recall issued | No | No |
| Lead counsel | Hagens Berman | Hagens Berman |
| Eligible states | 7 | TBD |
| Max individual payout | ~$12,712 | TBD |
What Ford 6.7 Owners Can Do Now
- Join the active Hagens Berman lawsuit — no cost to class members; contingency basis
- File NHTSA complaint — contributes to recall investigation pressure
- Document all repairs — keep every receipt, diagnostic report, and communication with Ford
- Consult a consumer protection attorney — individual claims viable in many states
- Take preventive measures — additives, lift pump, DPK if pump hasn’t failed
- Consider CP3 conversion — permanent fix using older, more reliable pump design
Conclusion
Ford’s CP4.2 turns reliable Super Duty trucks into repair nightmares, with ongoing litigation offering hope but no quick cash like GM owners got—proactive CP3 swaps and additives remain your best defense against $20K bills. Monitor symptoms closely and push for recall pressure now.