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Description
Rocker Lever 3937219 3942737 for Cummins 4B3.9/6B5.9/ISB/QSB Engines & Hyundai ExcavatorsReplacement part number: 3937219, 3942737 Fit For Cummins Engine: 4B3. 9, 6B5. 9, 6C8. 3, B4. 5 RGT, ISB (Chrysler), ISB 2002 DCX, ISB CM2150, ISB CM2150 E, ISB CM550, ISB CM850, ISB ISD4. 5 CM2150 SN, ISB ISD6. 7 CM2150 SN, ISB4. 5 CM2150, ISB5. 9 CM800, ISBE CM2150, ISBE CM800, ISBE4 CM850, ISC CM2150, ISL CM2150, ISL9 CM2150 SN, NH NT 855, QSB4. 5 CM850(CM2850), QSB5. 9 44 CM550, QSB5. 9 CM550, QSB5. 9 CM850, QSB6. 7 CM2250, QSB6. 7 CM850(CM2850),
Replacement part number:
3937219, 3942737Fit For Cummins Engine:
4B3.9, 6B5.9, 6C8.3, B4.5 RGT, ISB (Chrysler), ISB 2002 DCX, ISB CM2150, ISB CM2150 E, ISB CM550, ISB CM850, ISB/ISD4.5 CM2150 SN, ISB/ISD6.7 CM2150 SN, ISB4.5 CM2150, ISB5.9 CM800, ISBE CM2150, ISBE CM800, ISBE4 CM850, ISC CM2150, ISL CM2150, ISL9 CM2150 SN, NH/NT 855, QSB4.5 CM850(CM2850), QSB5.9 44 CM550, QSB5.9 CM550, QSB5.9 CM850, QSB6.7 CM2250, QSB6.7 CM850(CM2850), QSC8.3 CM850(CM2850)
Application:
Fit For Hyundai Forklift: 110D-7E, 130D-7E, 140D-7E, 160D-7E
Fit For Hyundai Excavator: R140W-9, R170W-9, R200W-7A, R210LC-7A, R210LC-9, R210NLC-7A, R210NLC-9, R210W-9, R210W9-MH, R250LC-7A, R250LC-9, R260LC-9S(BRAZIL), R290LC-7, R290LC-7A, R290LC-9, R290LC-9MH
Fit For Hyundai Loader: HL730-7A, HL730TM-7A, HL740-7A, HL740TM-7A, HL757-7A, HL757TM7A, HL760-7, HL760-7A
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Great product saves money.
Fits as it should
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
★★★★★ 5
Best Air Filter EVER
I have used these in my cars for years. They improve turbo lag significantly, increase air flow, and just work. What I like best about these, beside the protection they offer the air intake system, is that they truly are a life long product. My last car had one in it for 13 years. With a cleaning every 25K miles as outlines by KN the air filter just continued to work and work.
I recently purchased one for my new Honda CR-V and had it installed at the dealership at 500 miles when I was getting an oil change to flush out the build lube. The mechanic who did the work left me a note that said "great filter, I love these"
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Reviewed in the United States on July 13, 2019
★★★★★ 4
Worth it! Love these filters.
I love K & N air filters and always install them in my cars. This eliminated my cars Turbo lag in my 2019 Honda Civic Ex which has a 1.5L Turbo. Acceleration has improved and makes the car louder (I also have dual exhaust) I love how you don't have to change or clean it for 50,000 miles!! I know it's expensive but will last forever! Only issue was it was very difficult to install and a pain but this is more Hondas fault as I could not fully remove the plastic case where this filter goes under the hood even with tools.
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Reviewed in the United States on November 23, 2019
★★★★★ 5
Works great
Perfect fit
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Reviewed in the United States on August 7, 2025
★★★★★ 5
More power and better mileage
Put this in my 2017 CRV and have noticed much more pickup and better mileage overall. Usually I average 22mpg with mixed driving and this has me hovering around 25mpg and I get to have extra power on top of that. Install was straightforward and a breeze. Whole project is done in ten mins and your car is instantly more fun and getting improved MPGS
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 30, 2024
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