Exergy 06-07 Chevrolet Duramax 6.6L LBZ 10mm Stroker CP3 Pump (LBZ Based)
This page is for 2006-2007 Chevrolet Silverado and GMC Sierra HD owners with the 6.6L LBZ Duramax whose rail pressure can no longer keep up with bigger injectors and tuning. The Exergy 10mm Stroker CP3, part number E04 10306, is built on an LBZ pump and is rated by Exergy for builds up to 800+HP on a single pump, so you avoid the second pump, extra belt and controller of a dual-pump kit.
On the LBZ, the CP3 is driven off the engine and feeds the common rail that supplies all eight injectors. The ECM meters how much fuel enters the pump through the inlet metering valve and holds rail pressure with that valve and the injector demand. A stock CP3 runs out of volume once injectors and tuning ask for more fuel than its plungers can move at a given RPM. The stroker design lengthens the plunger stroke, so each revolution delivers more fuel, and Exergy carries over the reliability features of its Sportsman pump.
Exergy durability-ran each pump series at 4500 RPM for 40 hours during development, and every production pump is tested across its full range up to 4500 RPM and 29,000 psi before it ships. Exergy also states the 10mm Stroker has third-party testing supporting a reasonable basis of federal emissions compliance.
Scan desired versus actual rail pressure and lift pump pressure on the same full-throttle run. A dirty filter, a weak lift pump or air in the fuel all show the same low rail pressure, and a new stroker cannot fix a starved inlet. Check the metering valve too; a sticking LBZ/LMM inlet metering valve causes pressure swings that look like a tired pump. And remember the LBZ is the first Duramax with the six-speed Allison 1000; a slipping converter clutch can be mistaken for lost fuel. Our Allison 1000 converter shudder guide covers that test.
This listing is sold for 2006-2007 LBZ Duramax 6.6L trucks, the application in Exergy's LBZ CP3 category. Exergy lists it as a replacement for Bosch 0 445 020 037, 0 445 020 105 and 0 986 437 332, and GM 97780161, 97720662, 97361351 and 8973613516, so compare the tag on your current pump. Exergy's vehicle chart shows a wider span of 6.6 trucks and vans, but LB7, LLY, LMM and later engines have their own Exergy pump part numbers; if your truck is not an LBZ, send us the year and VIN before ordering. Browse the rest of the lineup in engine performance parts.
There is no core charge and no core to send back. If you only need a stronger stock-volume replacement, the LBZ Sportsman CP3 is the lower-cost option. Before adding this much fuel, read our Allison 1000 service guide so the transmission is ready for it.
| Brand | Exergy |
| Part number | E04 10306 |
| Fits | Exergy 06-07 Chevrolet Duramax 6.6L LBZ 10mm Stroker CP3 Pump (LBZ Based) |
| Vehicle fitment | Chevrolet Duramax (2006-2007) |
| Type | Injection Pumps & Controllers |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
This listing is sold for the 2006-2007 LBZ. Exergy makes separate CP3 part numbers for other Duramax generations, so send us your year and VIN and we will confirm the right pump before you order.
Exergy rates its 10mm Stroker CP3 for applications up to 800+HP on a single pump. Injectors, turbo, tuning and fuel supply decide what your truck actually makes.
Exergy says a lift pump capable of 150 GPH at 8-10 psi per pump is required for maximum performance. A worn factory lift pump will limit the stroker.
No. Exergy states there is no core charge and no core return needed.
Plan on it. The pump moves more fuel per revolution, and the calibration has to be set up for that volume and your injectors to use it correctly.
