No-Core Diesel Engine Rebuilds & Remans
JSJ Diesel does full-blown “No Core Needed” engine rebuilds.
No hunting down a donor. No returns. We supply the core as part of the job—and we never take a core back.
You get a turnkey, run-tested engine built the way you want it.
Why JSJ Diesel?
~30% savings vs big-name dealers (in most cases)
1-Year Warranty on all rebuild/reman engines
100+ years combined rebuild experience
Run-tested on video before shipping
OEM or Aftermarket parts—your call
On-time delivery to your window
No core required. No core returns. Ever.
What You Get: True Drop-In
We ship in complete drop-in configuration. In most cases your engine arrives with:
- Starter & Alternator
- Turbocharger
- Fan Clutch
- Bell Housing
- Air Cooler
- …and more, inspected and in excellent working condition
Exact configuration depends on application and customer preferences.
Built Your Way
- Parts choice: OEM or quality aftermarket—tell us your preference.
- New harness: Most rebuilds include a new engine harness.
- Standards: All major components are machined to meet or exceed OE specs.
- Internals: All internal parts are 100% new, except the crank (reused only if it passes spec; replaced if needed).
- Finish: Painted, packed, and prepped for delivery.
Our Rebuild Process
- Scope & Parts Preference. We align on OEM vs aftermarket, harness inclusion (usually new), and any application-specific items.
- Tailored Quote. You receive a professional, customer-specific invoice/quote.
- Deposit to Start. A 50% deposit kicks off your rebuild.
- Build. We completely disassemble, clean, detail, and machine to spec; replace internal parts (see above), then assemble.
- Run Test on Video. Every drop-in is fully run-tested before release; we send you the video for approval.
- Balance & Ship. After you approve the run video, the balance is due. We ship on your pre-set timeline—on time.
Quality Standards
- Highest industry practices on every rebuild/reman.
- Complete tear-down, cleaning, and detailing.
- Machining of all major components to meet/exceed OE specs.
- Full drop-in test & verification prior to release.
Warranty
1-Year Warranty on all JSJ Diesel rebuild/reman engines.
Ask for written terms; coverage details vary by application and use case.
Straight Talk on Price & Cores
- Serious Value: Compared to big “name brand” dealerships, our rebuild/reman pricing is often around 30% less in most cases.
- No Core Needed: We supply the core in our quote. We never take back a core.
- Time & Hassle Saved: No downtime sourcing a core, no return conditions, no surprises.
FAQs
- Do I have to send you my core?
- No. No core needed—ever. JSJ Diesel supplies the core as part of the job and we do not take cores back.
- OEM or aftermarket parts?
- Your call. We’ll build to your preference and advise where OEM is the smarter move. Most builds include a new engine harness.
- How do I know the engine runs right?
- Every drop-in is run-tested on video before shipping. You see and approve it before the balance is due.
- What about timeline?
- We deliver on time within the quoted window and handle the shipping we agreed on up front.
- What’s covered under the warranty?
- 1-year warranty on all rebuild/reman engines. We’ll provide the written terms with your quote—simple, straight, and fair.
