2004.5-2005 Chevy/GMC 6.6L Duramax LLY Remanufactured CP3 Injection Pump | Bosch 0 986 437 308

$866.00

This will also add the following products to your cart:

  • Core Charge - CP3 (Refundable) - $200.00

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Bosch Remanufactured CP3 Injection Pump: 2004.5-2005 Duramax LLY

Factory-remanufactured by Bosch for the 6.6L Duramax LLY, the second-generation Duramax that introduced the variable geometry turbo. This CP3 restores full fuel delivery performance to your LLY-equipped truck.

What’s Included

  • Bosch remanufactured CP3 injection pump
  • New fuel pressure regulator (MPROP/metering unit)
  • Mounting O-ring

Specifications

Pump TypeBosch CP3 (Common Rail 3rd Generation)
Bosch Part #0 986 437 308
OEM Cross-Reference0 445 020 030, GM 97303762, 97780091
Max Pressure23,000 PSI (1,600 bar)
ConditionGenuine Bosch Remanufactured
Weight~19 lbs

Vehicle Fitment

  • 2004.5 Chevy Silverado / GMC Sierra 2500HD/3500 6.6L Duramax LLY (VIN code 2)
  • 2005 Chevy Silverado / GMC Sierra 2500HD/3500 6.6L Duramax LLY (VIN code 2)

LLY Identification

The LLY Duramax is identified by VIN code “2” in the 8th digit. The LLY arrived in mid-2004 and uses a different CP3 calibration than the earlier LB7 or later LBZ. Make sure you’re ordering the correct pump for your VIN code.

About Valley Fuel Injection

We’re a Bosch-authorized, Alliant Power dealer with 45+ years of diesel fuel injection experience. Call us at (530) 668-0818.

Why do I see this common rail pump cheaper online?
Short answer: it is usually not the same part, and a failed pump can damage the rest of the fuel system. 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 failed pump damages the rest of the fuel system. When a high-pressure pump fails, it sends metal through the rails, the lines and every injector. That is why fuel contamination kits exist. A pump that was never tested to spec puts all of that at risk.

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.

2004.5-2005 Chevy/GMC 6.6L Duramax LLY Remanufactured CP3 Injection Pump | Bosch 0 986 437 308
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