Name: 06-07 GM 6.6L LBZ Duramax Bosch New Fuel Injector
Brand: Bosch
SKU: PDP0445120042
Price: 560.42 USD
Availability: InStock

06-07 GM 6.6L Duramax Bosch New Fuel Injector

Bosch 0445120042 New Fuel Injector - 2006-2007 GM 6.6L LBZ Duramax

$560.42

Part Number: 0445120042
Est. Ship Time: Usually Ships In 1-2 Business Days

Bosch

Qty

Add to Cart

Ask Question

Add to Wish List

SSL SECURE
TRANSACTION

AUTHENTIC
PRODUCTS

GUARANTEED PREMIUM
QUALITY

A+ Rating

Based on 0 reviews. - Write a review

The Bosch 0445120042 is a brand-new LBZ Duramax fuel injector for the 2006-2007 GM 6.6L LBZ Duramax, put through extensive end-of-line testing to the exact specifications of the original component. This Bosch 0445120042 new LBZ injector is a direct-fit replacement that maintains OE fuel system function and operation on the Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, and Sierra 3500 with the LBZ engine. No core charge. No core to return. Sold individually; order quantity 8 for a complete engine set.

Buy this if...

Your 2006-2007 LBZ Duramax needs an injector and you want all-new Bosch components with no core charge and no core return process.
You want to restore OE fuel delivery and idle quality on the 6.6L LBZ common rail system without reusing any components.

Do not choose this if...

Lower upfront cost is the priority - the Bosch 0986435521 remanufactured LBZ Duramax injector covers the same application with a core return process.
Your truck is a 2007.5 or later LMM - the LBZ ended mid-2007 and the LMM uses a different injector.
Your truck is a 2004.5-2005 LLY or 2007.5-2010 LMM - those generations each use a different injector.

Verify before ordering...

Engine code is LBZ. The 2007 model year split mid-year - early-build 2007 trucks are LBZ, 2007.5 and later are LMM.
Injector failure is confirmed by diagnostic testing, not assumed from symptoms alone.

Bosch 0445120042 New vs. 0986435521 Reman - LBZ Injector Comparison

The Bosch 0445120042 new and the Bosch 0986435521 reman LBZ injector cover the exact same 2006-2007 LBZ Duramax application. Choose this new injector if you want all-new Bosch components, no core charge, and no core return process. Choose the reman if lower upfront cost matters more and you are comfortable with the core return process. Both are Bosch-built for the 6.6L LBZ common rail fuel system.

Condition: Brand new - all-new Bosch components

Tested: End-of-line tested to OE specifications

Core charge: None

Sold: Individually - order quantity 8 for a full engine set

LBZ Duramax Injector Failure Symptoms

Owners of 2006-2007 Silverado and Sierra trucks with the 6.6L LBZ frequently search for a replacement LBZ injector after experiencing rough idle, hard starts, misfires, white or black smoke, or declining fuel economy. Low power under tow load and uneven idle are also consistent with LBZ injector degradation. These symptoms are consistent with injector wear or failure. If diagnostic testing confirms a failed injector, the Bosch 0445120042 is the correct replacement for the LBZ. Verify the injector is the confirmed source before ordering.

Why Choose the Bosch 0445120042 New LBZ Injector

The Bosch 0445120042 is a genuine new fuel injector - not a remanufactured unit. Every injector undergoes extensive end-of-line testing using the exact test specifications and equipment of the original component before shipping. A direct-fit replacement that maintains OE fuel system function and operation on the 6.6L LBZ without modification, tuning, or calibration. No core return is required.

What Comes in the Box

(1) New Bosch 6.6L LBZ Duramax common rail fuel injector - 0445120042

Not included: Connector tubes, valve cover gaskets, return lines, installation hardware.

Bosch 0445120042 Fitment - 2006-2007 LBZ Duramax

Fits 2006-2007 Chevrolet and GMC trucks equipped with the 6.6L LBZ Duramax diesel engine. The LBZ ended mid-2007 at the 2007.5 model year cutover. If your truck is a 2007 model, confirm the engine code is LBZ and not the 2007.5 LMM before ordering.

2006-2007 Chevrolet Silverado 2500 HD - 6.6L LBZ Duramax
2006-2007 Chevrolet Silverado 3500 - 6.6L LBZ Duramax
2006-2007 GMC Sierra 2500 HD - 6.6L LBZ Duramax
2006-2007 GMC Sierra 3500 - 6.6L LBZ Duramax

Does not fit: 2004.5-2005 LLY, 2007.5-2010 LMM, 2011-2016 LML, or any other Duramax generation.

Common Ordering Mistakes to Avoid

Ordering for a 2007.5 LMM. The 2007 model year split mid-year. Early-build 2007 trucks are LBZ. 2007.5 and later are LMM and require a different injector. Confirm the engine code before ordering.
Confusing LBZ with LMM. These are different engine families with different injector part numbers. The LBZ ran 2006-2007; the LMM began at 2007.5. Verify the engine code on the RPO sticker before ordering.
Ordering 6 for a full engine set. The 6.6L LBZ Duramax is a V8 with 8 cylinders. A complete engine set requires 8 injectors.

Cross Reference Numbers for Bosch 0445120042

If your current LBZ Duramax injector carries any of the numbers below, the Bosch 0445120042 is the confirmed direct replacement. Match your old number here before ordering.

0 445 120 042	0 986 435 521	0 986 435 521RX	0445120042
0-445-120-042	05745888	0986435521	0-986-435-521
0986435521RX	0-986-435-521RX	2171921	2411300004
2J208	2J-208	502513	502-513
5745888	63871	63877	67561
732503	732-503	7839GN	7839-GN
8973613556	8-97361355-6	97361355	97780358
97780474	AP55521	DA2251042	DE668
DT660003R	DT97361355R	EX631047	FJ962
FJ-962	R986435521

Related LBZ and Duramax Injector Pages

Order Checklist

Engine code confirmed as LBZ, not 2007.5 LMM
New chosen - no core charge, no core to return
Full engine set requires 8 injectors - quantity confirmed
Injector failure confirmed by diagnostic testing, not symptoms alone

For an all-new stock-spec rebuild on a 2006-2007 6.6L LBZ Duramax with no core charge, the Bosch 0445120042 is the correct injector to order.

Frequently Asked Questions

Click or tap a question below to expand the answer.

Will the 0445120042 fit my 2007 Chevy Silverado 2500 HD with the 6.6L Duramax?

It depends on the build date. The Bosch 0445120042 fits 2006-2007 trucks with the LBZ Duramax engine. The 2007 model year split mid-year - early-build 2007 trucks have the LBZ, while 2007.5 trucks have the LMM. Confirm the engine code is LBZ before ordering a 2007 model. A 2007.5 LMM requires a different injector.

What is the difference between the LBZ and LMM Duramax injector?

The LBZ (2006-2007) and LMM (2007.5-2010) are different Duramax generations that use different injectors. The 0445120042 is for the LBZ only and will not fit an LMM. The split happened mid-2007 - early 2007 trucks are LBZ, 2007.5 and later are LMM. LLY (2004.5-2005) injectors are also different. Confirm your engine code on the RPO sticker before ordering.

How many injectors do I need for a complete 6.6L LBZ Duramax set?

The 6.6L LBZ Duramax is a V8 engine with 8 cylinders. A complete engine set requires 8 injectors. This listing is sold individually - order quantity 8 to replace all injectors at once.

Does the 0445120042 come with a core charge?

No. The Bosch 0445120042 is a brand-new injector with no core charge and nothing to return. If you want a lower upfront cost and are comfortable with a core return, the remanufactured Bosch 0986435521 covers the same LBZ Duramax application.

Does the 0445120042 replace GM number 97361355?

Yes. GM 97361355 is a confirmed cross-reference for the Bosch 0445120042 LBZ Duramax injector. If your LBZ injector carries that number and your truck is a 2006-2007 LBZ Duramax, the 0445120042 is the correct new replacement.

My LBZ Duramax is hard to start and has low power - is this the right part?

Hard starts and low power on the 2006-2007 6.6L LBZ Duramax are consistent with injector wear or failure, but can also have other causes. If diagnostic testing confirms a failed injector, the Bosch 0445120042 is the correct replacement for the LBZ. Verify the injector is the confirmed source of the symptoms before ordering.

Same Brand
Same Category

Bosch 0445120042 New Fuel Injector - 2006-2007 GM 6.6L LBZ Duramax

Call or Text:

INFORMATION

CUSTOMER SERVICE