Best in 7 days
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
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For Your Every Summer RSVP, with Code: SUMMER15
Description
3'' x 8'' Seal Washer3'' x 8'' Seal Washer 3670134 C1, P6546001, 74R5401 DIAMETER: 3'' OVERALL HEIGHT: 8'' FITTING INLET: Seal Washer KA76266 FITTING OUTLET: #6, 3 8'' O Ring Can be installed on the following vehicles: INTERNATIONAL NAVISTAR 4300 DURASTAR INTERNATIONAL NAVISTAR 4400 DURASTAR INTERNATIONAL NAVISTAR 7400 WORKSTAR INTERNATIONAL NAVISTAR 7600 WORKSTAR INTERNATIONAL NAVISTAR 8600 INTERNATIONAL NAVISTAR LONESTAR Inlet Tube Drop Length = 5 1 2'' Outlet Tube Drop
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
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.2 ★★★★★
Based on 186 reviews
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Product Reviews
★★★★★ 5
It's Sea Foam (but not green)
Color: 3 Pack
What is there to say? If you're buying Sea Foam, you know what it is and what it does, and you're probably going to continue buying it. It's great stuff.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
★★★★★ 5
Quality Champion Brand plugs
Repeat customer. Quality Champion product worth the extra $
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
★★★★★ 5
Original OEM equipment
They seem to be the copper plug required for this engine. Runs great and as it should.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
★★★★★ 5
Genuine Champion Spark plugs
Genuine Champion Spark plugs at a great price!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 7, 2025
★★★★★ 5
Go For It.
Good Plug
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
