Browse Categories

Click image to enlarge

WARNING: Cancer & Reproductive Harm -

Cummins 855 Late Cylinder Head - Brand New, Loaded - 3055098

Part Number: 166226
Brand: HDP
Mfg Warranty:  
Our Price: $873.60
MSRP: $943.49
You Save: $69.89 (7 %)
Engine Serial Number
Engine CPL Number
 NOTE: Our website does not automatically run your VIN/Engine Serial Number. We run it after your purchase to ensure you are getting the correct parts for your engine.

Superior Quality Parts: Heavy Duty Pros parts meet and exceed the OEM quality specifications.

Fast Shipping: We ship from warehouses across the US to ensure the quickest delivery.

Expert Technical Advice: We have industry repair technicians standing by to provide expert advice for your repair.

Huge Savings: We offer competitive online pricing for significant savings.

Product Details & Specifications
Cummins 855 Late Model Big Cam IV 400

300-350HP Automotive Applications. 

Please note: This cylinder head is assembled with "Small" Valve Springs, which are 1.25" in Outside Diameter. OE Spring Part Number 211999. If your current head has 1.50" OD valve springs, you will need to order item 166227 instead.  

Before ordering, please ensure that your current head has:
1.25" OD Valve Springs (Small)
1.55" Exhaust Ports (Small)
3/8" injector hold-down bolts (Large)  - OE Part Number 3049333
0.140" Valve Protrusion (Standard)
If you are unsure, please give us a call with your 8 digit engine serial number and we will verify your build. 

Loaded cylinder head. Assembled, tested and machined in the US! This item will arrive with a full valvetrain assembly and injector cups already installed. You will just need to swap your own injectors over.  

Cylinder head casting and all components are brand new. There is no core charge associated with this item. 

Cross Reference with:
Casting Numbers: 3046760
OE Part Numbers: 3055098, 3406734, 3411809, 3675505