BorgWarner S2A Turbocharger, part number 318615, for John Deere 4045/4045T 4.5L. Supplied by Valley Fuel Injection & Turbo, a Northern California diesel specialist and authorized dealer since 1993, and shipped anywhere in the country.
Confirm Fitment Before You Order
Turbochargers are application specific, and the same engine often shipped with more than one turbo depending on year, emissions package, and rating. The number stamped on your existing unit is the one that settles it. Call 530-668-0818 with that number and we will confirm the exact match, at no charge, before you buy the wrong part.
Specifications
| Part number | 318615 |
| Brand | BorgWarner |
| Condition | New |
| Application | John Deere 4045/4045T 4.5L |
| Warranty | 100000 miles |
| Core charge | None. This is a new unit. |
Vehicle & Equipment Fitment
| Years | Vehicle / Equipment | Engine | Notes |
|---|---|---|---|
| — | John Deere utility & row-crop tractors | 4045 / 4045T 4.5L PowerTech | The 4045 spans many series and model years |
| — | John Deere backhoes & wheel loaders | 4045T 4.5L PowerTech | Industrial/construction applications |
| — | John Deere combines, sprayers & harvesting | 4045 / 4045T 4.5L PowerTech | Ag applications |
| — | Generator sets & industrial power units | 4045 / 4045T 4.5L PowerTech | OEM gensets and irrigation power |
The 4045 PowerTech went into a very wide range of Deere equipment over many years, and the same engine was built with more than one turbo depending on rating and emissions tier — so we list equipment families rather than a model list that would imply a guarantee. The number stamped on your existing turbo is what confirms it. Call 530-668-0818 with that number, or your equipment PIN, and we will confirm free.
New, Not Rebuilt
This is a factory new BorgWarner unit, not a rebuilt or “will-fit” turbo from an unknown shop. There is no core to return and no gamble on what somebody else did to it. Factory new is the right call when a remanufactured unit is not offered for your number, when no core is available, or when you simply want a unit with zero hours on it.
Signs Your Turbo Needs Replacing
- Loss of boost, low power, or long spool-up
- Shaft play, or a wheel that has contacted the housing
- Oil in the intake or exhaust, or blue smoke under load
- Whining, siren-like noise that rises with engine speed
- Cracked housing, or a turbo that has ingested debris
Worth saying plainly: a surprising number of “bad turbo” complaints are actually fuel problems. We test injection pumps and injectors every day, so if your symptoms point that direction, we will tell you before you spend money on a turbo.
Cross Reference: Part Numbers This Replaces
If your old unit, parts book, or dealer quote shows any of the numbers below, this is the part that supersedes or interchanges with it. There are 69 known references for 318615:
1700700304 · 170-070-0304 · 1700701861 · 170-070-1861 · 1703000005 · 170-300-0005 · 1708460008 · 170-846-0008 · 174735 · 318570 · 3990015011 · 3990023112 · 418570 · 471049-0001 · 471049-0002 · 471049-0003 · 471049-0004 · 471049-0006 · 471049-0008 · 471049-5001 · 471049-5002 · 471049-5003 · 471049-5004 · 471049-5006 · 471049-5008 · 471049-9001 · 471049-9002 · 471049-9003 · 471049-9004 · 471049-9006 · 471049-9008 · C1501102 · C15-011-02 · ER60076 · RE503097 · RE508876 · RE508877 · RE508971 · RE509818 · RE523366 · RE526420 · RE528772 · RE529469 · RE531074 · RE531983 · RE532282 · RE532290 · RE533436 · RE533442 · RE536407 · RE537049 · RE537183 · RE548729 · RE548734 · RE548737 · RE548748 · RE59379 · RE59997 · RE59999 · RE60046 · RE60069 · RE60076 · RE67647 · RE70995 · SE502278 · SE502438 · SE502445 · SE502838 · SE548737
Do not see your number? That does not always mean it will not fit. Call 530-668-0818 and we will check it against the factory catalog.
Why Buy It From Valley Fuel Injection
We are not an order taker with a warehouse. We have been rebuilding and calibrating diesel fuel systems in Woodland since 1993, we are an authorized dealer for the people who actually build these units, and we ship nationwide. You get a genuine part, a real warranty, and someone on the phone who works on these engines.
Need a different turbo? We source almost anything: see turbocharger sourcing or browse all turbochargers. Chasing a fuel problem instead? See our injection pump and injector rebuild services.
Pricing covers the unit itself. Any applicable sales tax, shipping, and the refundable core charge (on remanufactured units) are additional. Buying tax-exempt? Qualifying diesel repair shops, fleets, farms, and agricultural operations can purchase tax-free. Set up tax-exempt purchasing by submitting your resale or exemption certificate once, and every qualifying order is tax-free going forward.
Why do I see this turbo cheaper online?
Short answer: it is usually not the same part — and a turbo failure feeds the engine. Read why ↓
Search any OE number and eBay, Amazon and a dozen storefronts will show it well under dealer cost, sold by outfits with no name, no address and no phone number. We lose business to those listings every week — and we see a lot of them come back through our shop. Here is what is actually different.
- The part number proves nothing on its own. Counterfeit injectors and pumps are stamped with the same OE numbers as the real thing, in housings cast to look identical. The number in the listing title tells you what the seller claims it is, not what came off an OE line.
- “Remanufactured” is not a regulated word. A genuine reman unit is stripped to bare components, has its wear parts replaced — nozzle, plunger and barrel, solenoid, seals — and is then run on a calibration bench until it meets the original flow and response spec. A cheap one is very often cleaned, resealed, painted and shipped. Both get called remanufactured.
- No full teardown, so no idea what is worn. A proper rebuild means the unit comes apart completely and every part gets inspected and measured against spec — not just the ones that are obviously bad. Skip the teardown and you are reusing worn internals inside a freshly painted housing. It will run on the truck. It will not last.
- No factory-spec bench load testing. A unit is not finished until it has been run under load on a test bench and made its numbers across the range, not just at one easy point. That bench time is most of what you are paying for. Sellers working on price cut it first, because nobody can see it in a photo.
- The warranty has to be honored by someone. Everything we remanufacture in house carries a one-year warranty, with 30 days on electrical components. Parts we supply as an authorized dealer carry the manufacturer’s own warranty. Either way you call us, a real shop in California, and we sort it out. A marketplace warranty usually means shipping the part overseas at your own cost and hoping for a reply.
- No core program. We credit your rebuildable core back in full. Discount sellers generally will not take one, so the gap narrows the moment you account for the core you are now stuck holding.
- A turbo failure feeds the engine. When a bargain turbo lets go it can put oil and debris straight into the intake. What starts as a turbo you saved a few hundred on turns into an engine conversation. Balance and clearance data are not optional on a rotating assembly spinning past 100,000 rpm.
We are an authorized dealer and a working fuel-injection shop — we have been rebuilding and testing this hardware in Woodland since 1993, and the people who answer the phone are the people who run the benches. Not sure this is the right part for your engine? Call us with your serial number before you order and we will confirm it. Send your rebuildable core back and the core charge is refunded. And if a price somewhere else looks too good, call 530-668-0818 and we will tell you straight whether it is a deal or a problem.





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