Truck engine bay from Mitchell's business photos

Mitchell Diesel, Auto & Fleet Services

Specialty services

Diesel fuel-system upgrades, head studs, and compliant tuning. Tell us your year, make, model and engine so we can confirm the right fit.

CP4 disaster prevention kit

$900 — confirm parts and labor inclusions

Help limit fuel-system contamination if a CP4 pump fails.

A CP4 high-pressure fuel pump can shed metal debris when it fails, potentially contaminating injectors and other fuel-system components. An application-specific disaster prevention kit is designed to help contain or divert that debris. It does not prevent pump failure, repair a damaged pump, or guarantee protection. We check kit availability and fitment for your exact CP4-equipped truck before quoting; not every truck uses the same kit. Confirm parts and labor inclusions before booking.

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DCR pump conversion

$3,500 total — includes $1,000 labor plus parts

Replace the CP4 pump on supported Ford 6.7L Power Stroke trucks.

The S&S DCR conversion replaces the CP4 high-pressure fuel pump with a different pump design on supported Ford 6.7L Power Stroke applications. This removes the original CP4 pump rather than adding a debris-containment kit. Fitment is application-specific, not a universal conversion for all diesel trucks. We confirm your year, model and kit requirements. Existing fuel-system contamination or other damage requires separate evaluation and is not assumed to be included.

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Cummins head-stud installation

$1,000 — parts and labor

Upgrade cylinder-head fasteners on compatible Cummins engines.

Head studs replace the cylinder-head bolts with a stud-and-nut fastening system designed to provide consistent clamping when installed to the kit manufacturer’s specifications. We confirm the Cummins engine and stud-kit fitment before scheduling. This service is not a promise against head-gasket failure; existing gasket or cylinder-head damage needs a separate assessment.

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Emissions-compliant diesel tuning

Quote after consultation

Discuss vehicle-specific tuning that retains required emissions systems.

Contact us about tuning options for your exact diesel truck and intended use. We offer only emissions-compliant options that retain required emissions equipment and diagnostics. Availability and pricing depend on the vehicle and compliant calibration; we do not advertise emissions-delete services for road-going trucks or promise performance gains.

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