Performance Diesel Parts, Service & Fleet Repair
Parts, installs, tuning, maintenance, and fleet repair for Duramax, Cummins, and Power Stroke — out of Santa Ana, California.
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Mechanical Installs
Parts are only as good as the install. Turbos, injectors, fuel systems, lift pumps, transmissions — installed right the first time.
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Tuning
Calibration dialed in for your setup, your fuel, and how you actually drive the truck.
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General Maintenance
Oil and filters, fuel filters and water separators, coolant, transmission and differential fluids, belts, hoses, and inspections — done on schedule and written down, so small problems get caught before they strand the truck.
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Fleet Repair
Work trucks make money when they're running. Cal Coast Diesel keeps business fleets of diesel pickups and work trucks on the road with scheduled maintenance, straight diagnosis, and repairs done right the first time.
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Why Cal Coast
We stock a large performance parts inventory, so the common builds don't stall waiting on shipping. Source the parts, install the parts, tune the truck — no handoffs between three different shops pointing fingers at each other. And you'll get told what your truck actually needs, including when the answer is "not that part."
AboutFrequently Asked Questions
What trucks do you work on?
Mainly Duramax, Cummins, and Power Stroke diesel pickups. If you've got something else, ask. We'll tell you straight whether we're the right shop for it.
Can I buy parts without having you install them?
Yes. Parts are sold on their own, whether or not we do the install. Tell us the truck and what you're after and we'll check what's on the shelf.
Is your tuning emissions-legal in California?
Our tuning is for trucks that stay emissions-compliant in California. We don't remove or disable emissions equipment.
Do you work on business fleets?
Yes. We handle scheduled maintenance and repair for business-owned diesel trucks, with service records kept for every vehicle.
How do I get a quote?
Use the quote form or email [email protected]. Include the year, make, and model, and what you're trying to fix or build.