SKU: 41722723880

Industrial Injection Premium Stock Plus Cylinder Head 12-Valve With Fire Ring Groove 89-98 Ram 5.9L Cummins

Sale price$844.63 Regular price$938.48
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Description

Industrial Injection Premium Stock Plus Cylinder Head 12-Valve With Fire Ring Groove 89-98 Ram 5.9L CumminsThinking about upgrading to Fire Rings in your 12 Valve Cummins? Radius cut fire ring grooves create a stronger, more reliable combustion seal, allowing a 12 Valve Cummins engine to handle higher boost and cylinder pressure without head gasket failure. If you are planning on pushing your Cummins power to the limit, ensure your engine can withstand the extra stress that higher performing injectors and fuel systems can impose with a cylinder head

Thinking about upgrading to Fire Rings in your 12-Valve Cummins? Radius-cut fire ring grooves create a stronger, more reliable combustion seal, allowing a 12-Valve Cummins engine to handle higher boost and cylinder pressure without head gasket failure. If you are planning on pushing your Cummins power to the limit, ensure your engine can withstand the extra stress that higher-performing injectors and fuel systems can impose with a cylinder head designed to handle it. Get an affordable and reliable upgraded head with Industrial Injection's Premium Stock Plus Cylinder Head.

NOTE: Fire Ring Head Gasket Sold Separately. Installation of a fire ring gasket requires high yield head studs to ensure proper seat of the head to the cylinder block.

Precision Remanufacturing Process for Cylinder Heads

Every remanufactured cylinder head undergoes a detailed cleaning, inspection, and machining process to ensure it meets strict quality standards for diesel engine performance, durability, and reliability. This comprehensive remanufacturing process helps restore the strength and efficiency expected from a Cummins diesel engine.

Thorough Cleaning & Inspection

Each cylinder head begins with a deep cleaning process to remove contaminants and prepare the casting for inspection and machining.

  • High-pressure jet washing removes oil, grease, and debris
  • Glass bead blasting eliminates carbon buildup from the casting
  • Magnaflux inspection (for cast iron heads) detects hidden cracks
  • Pressure testing verifies structural integrity
  • Visual inspection ensures the casting is free of defects

Valve guides and valve seats are removed as needed to prepare the cylinder head for machining or port work.

Upgraded Heat-Treated Valve Guides

New high-strength alloy valve guides are installed to improve durability and longevity in demanding diesel engine environments. These guides are heat treated to Rockwell 22 “C” scale, delivering exceptional wear resistance that exceeds many factory materials, including bronze.

Each valve guide also features a precision spiral groove designed to retain oil and improve valve stem lubrication during engine operation.

Precision Diamond Honed Valve Guides

Instead of traditional reaming, the valve guides are precision honed using diamond abrasives. Diamond honing ensures consistent accuracy across every cylinder head.

This process provides:

  • Exact valve guide sizing
  • Consistent bore geometry
  • Smooth internal surface finish
  • Improved valve alignment and longevity

Each guide is verified using a valve guide bore gauge to ensure proper tolerances.

Multi-Angle Performance Valve Job

To improve airflow and combustion efficiency, the cylinder head receives a precision multi-angle valve job using a Serdi 100 guide and seat machine.

The Serdi system uses a solid carbide straight shank pilot inserted into the valve guide to simulate the valve stem during machining. This process ensures perfect alignment between the valve seat and valve face, creating an optimal seal and maximizing airflow in and out of the cylinder head.

Precision Cylinder Head Surfacing

Each cylinder head is resurfaced using CBN or diamond tooling on a Berco milling machine. This machining process restores a perfectly flat sealing surface and allows technicians to control the finish based on the head gasket being used.

For example, MLS (Multi-Layer Steel) head gaskets require an extremely smooth surface finish to ensure proper sealing in high-pressure diesel engines.

Final Assembly

Once all machining processes are complete, the cylinder head is:

  • Jet washed again for final cleaning
  • Thoroughly dried
  • Assembled with new valve seals
  • Equipped with new performance valve springs

The result is a high-quality remanufactured diesel cylinder head built for dependable performance in demanding Cummins engine applications.

Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 41722723880

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ABnyc
Draper, US
★★★★★ 5
Clear and Accessible
Format: Paperback
Great resource. I find these explanations accessible and the strategies scaffolded thoughtfully. No typos in my edition. Makes it easy to test prep while tutoring or in the classroom.
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Jordy Portugal
Omaha, US
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Essential Prep for Top Scorers
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As someone who was initially apprehensive about the transition from the traditional SAT to the new Digital SAT (DSAT), this test prep book has been a game changer. What sets this book apart is its targeted approach. It's designed for students already scoring 600 or higher, focusing on the challenging questions of Module 2. This precision in practice ensures that you're not just reviewing what you already know - you're pushing the boundaries of your testing ability. Each question is expertly crafted to mirror the format and difficulty of the actual DSAT questions, which has helped me gain confidence in handling the trickier problems, especially in the adaptive sections. The explanations are thorough and insightful, providing deeper understanding and techniques that are crucial for the exam. Thanks to this book, I feel significantly more prepared than I ever have before. For anyone serious about aiming for the 99th percentile - this test prep book is for you!
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Reviewed in the United States on May 8, 2024
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Peter Kwon
Whiting, US
★★★★★ 5
Perfect for Serious Students!
Format: Paperback
As it states in the product details, the DSAT Prep book is great for students who already score 600 and higher. As a teacher and tutor of the SATs (among other standardized exams), I needed more practice sets outside of the Barron's, The Princeton Review, and The College Board publications, which tend to be more mindful of beginner learners. I wasn't confident that the modules and questions from these texts were sufficiently challenging strong students. The DSAT from Edenbrook Learning removed that doubt. I also appreciate the simplicity of the layout of the text: literally 4 tests with respective answer keys, raw score conversion, and explanations. There's no fluff — perfect for my needs. Will recommend to colleagues and students alike!
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Reviewed in the United States on May 4, 2024
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Jamie
Lowell, US
★★★★★ 5
The Best!!!!!
Format: Paperback
These practice tests are excellent. I feels so lucky to have found this prep book for my daughter right before the big test in May. The explanations for the main idea questions, fill-in-the-blank parts, and rewriting sentences were super useful and helped my daughter get a score over 700. Can't wait for the next book to come out!!
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Reviewed in the United States on May 18, 2024
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Mehmet
Lowell, US
★★★★★ 5
Very good practice book - very close to digital SAT
Format: Paperback
Good test book - recommended for practice
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Reviewed in the United States on November 28, 2024

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