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Description
Idler Pulley 3971876 for Cummins 4B3.9 6C8.3 ISB/ISD4.5 CM2150 ISBE CM800 QSL9 CM850Replacement part number: 3971876 Application: Fit for Cummin Engine: 4B3. 9, 6C8. 3, ISB ISD4. 5 CM2150 B119, ISB ISD4. 5 CM2150 SN, ISB ISD6. 7 CM2150 SN, ISB4. 5 CM2150, ISBE CM800, ISBE4 CM850, ISC CM850, ISF2. 8 CM2220 F122, ISF3. 8 CM2220, ISL CM2150, ISL CM850, ISL9 CM2150 SN, NH NT 855, QSL9 CM850(CM2850)
Replacement part number:
3971876
Application:
Fit for Cummin Engine:
4B3.9, 6C8.3, ISB/ISD4.5 CM2150 B119, ISB/ISD4.5 CM2150 SN, ISB/ISD6.7 CM2150 SN, ISB4.5 CM2150, ISBE CM800, ISBE4 CM850, ISC CM850, ISF2.8 CM2220 F122, ISF3.8 CM2220, ISL CM2150, ISL CM850, ISL9 CM2150 SN, NH/NT 855, QSL9 CM850(CM2850)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.4 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
Must have
Color: White
Shame to say I haven’t used in awhile but did like the price and the iteams that were included.
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Reviewed in the United States on March 22, 2026
★★★★★ 5
Everything You Need for Sublimation
Color: Pink
This kit has all the tools I need for sublimation projects. The rulers, Teflon sheets, gloves, and tape make the process easy and safe. Great for beginners or pros.
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Reviewed in the United States on February 5, 2026
★★★★★ 5
Craft Room Staple
Model: Kraft er Paper 002
I purchased this butcher paper for my craft room, and it has been a fantastic addition to my supplies! I primarily use it with my heat press, and it works perfectly to protect both my designs and my press during sublimation and other heat-transfer projects. The paper provides a great barrier and prevents any ink bleed-through, keeping everything clean and professional-looking.
What I love about this butcher paper is its versatility. Beyond the heat press, it’s handy for a variety of other craft projects, like covering work surfaces for painting, wrapping delicate items, or even sketching out design ideas. The roll size is generous, so it lasts a long time, even with frequent use.
The quality is excellent—it’s thick enough to withstand heat and pressure but still easy to cut and handle. It’s a must-have for any serious crafter or DIY enthusiast!
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Reviewed in the United States on January 12, 2025
★★★★★ 5
Great
Model: Kraft er Paper 002
It’s a good product
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Good for sublimation
Model: Kraft er Paper 002
I use this for covering my sublimation designs to protect my heat press. It does its job well.
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Reviewed in the United States on March 1, 2026