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Ships within 48 hours · Estimated delivery Oct 5 - Oct 10
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Description
MT3903 RAPID SEAL KIT INTERNATIONAL APPLICATIONCross References Brand Manufacturer Part Number AP Air Inc. 44 300 Autokool MT3903 FleetPride OTR503903, OTRRS1003 Global Parts Distributors LLC (GPD) 1321372 Ideal Air 7901069 MEI Air Source 0169, 0179 Murray Climate Control 26975 Navistar International (OEM) 2614861C91, 2614861 C91, 2614861C92 Omega Environmental Technologies (Main Product) MT3903 Red Dot 70R5506, RD 5 15358 0P Santech MT3903 Sunair Products KT NAV3 UAC RS 3903, RS3903 Technical
Cross References
| Brand / Manufacturer | Part Number |
|---|---|
| AP Air Inc. | 44-300 |
| Autokool | MT3903 |
| FleetPride | OTR503903, OTRRS1003 |
| Global Parts Distributors LLC (GPD) | 1321372 |
| Ideal Air | 7901069 |
| MEI / Air Source | 0169, 0179 |
| Murray Climate Control | 26975 |
| Navistar / International (OEM) | 2614861C91, 2614861-C91, 2614861C92 |
| Omega Environmental Technologies (Main Product) | MT3903 |
| Red Dot | 70R5506, RD-5-15358-0P |
| Santech | MT3903 |
| Sunair Products | KT-NAV3 |
| UAC | RS 3903, RS3903 |
Technical Specifications
| Feature | Details / Value |
|---|---|
| Product Type | A/C System O-Ring and Gasket Kit |
| Kit Designation | Rapid Seal Kit / Navistar Slim Line Washer Kit |
| Material Composition | Premium Hydrogenated Nitrile Rubber (HNBR) O-Rings & Heavy-Duty Steel Washers |
| Total Piece Count | 15-Piece Assortment Kit |
| Kit Contents | • 3 x #6 Navistar Slim-Line Sealing Washers & HNBR O-Rings • 6 x #8 Navistar Slim-Line Sealing Washers & HNBR O-Rings • 6 x #10 Navistar Slim-Line Sealing Washers & HNBR O-Rings |
| Refrigerant Compatibility | Flawlessly compatible with R12, R134a, and R1234yf system fluid parameters |
| Physical Properties | Excellent elastomer compression, high chemical degradation resilience, extreme temperature thresholds, and complete sealing force retention |
| Country of Origin | China (CN) |
| UPC Code | 00780250942939 |
| Product Department | HVAC Systems / Mobile Climate Control Sealing Components |
Applications & Compatibility Guide
| Category | Usage & Compatible Truck Models |
|---|---|
| Recommended Use | • Designed as a complete vehicle-specific rapid refresh overhaul bundle containing exact-fit replacement seals required for servicing the compressor, accumulator, expansion valve, and condenser plumbing junctions in a single repair job. |
| Truck & Engine Models | • International / Navistar Commercial Fleet Platforms: - International ProStar , Navistar , LT , Models |
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
4.1 ★★★★★
Based on 29 reviews
Sort
Product Reviews
★★★★★ 5
These are just perfect pillow cases
Color: Mint, Size: Zippered 13x18 Inch (Pack of 2)
Lovely covers. Soft and easy to use with the hidden zipper
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Comfortable and stays cool
Color: White-cooling Basic, Size: Queen(Pack of 1)
Great pillow. When i opened it, i noticed a strange smell, i assumed its the smell of whatever they use to make the pillow stay cool. You have to fluff it for a good amount of time to make sure the cooling agent spreads well in the foam. Is what i assumed atleast. Its a perfect amount of softness for me. Pair it with some bamboo pillow cases and you got a good night of sleep
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
BEST, MOST COMFORTABLE PILLOWS EVER!
Color: White-cooling Basic, Size: Queen(Pack of 2)
I've used others.BEST PILLOWS EVER! Firm, cooling and supportive. LOVE THESE!
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Reviewed in the United States on May 28, 2026
★★★★★ 4
Comfortable and Supportive, but Adjust the Filling
Color: White-cooling Basic, Size: Queen(Pack of 2), Color: White-cooling Basic, Size: Queen(Pack of 2)
I’m very happy with this pillow. The size is big and it feels soft while still providing good support, perfect for midnight scrolling on TikTok.
One thing to keep in mind is that it can feel a little too tall if you use all of the filling that comes with it. The good news is that you can easily adjust the amount of filling to find the height that works best for your sleeping position. Once I customized it, it was much more comfortable.
Overall, great quality, comfortable, and worth the purchase.
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Reviewed in the United States on June 3, 2026
★★★★★ 5
BEST PILLOWS EVER!!!
Color: White-cooling Basic, Size: Queen(Pack of 2)
I am very picky with my pillows because I have a bad neck and I can never seem to find a good pillow. But I tried this pillow because it had everything I was looking for and the price was great! You get two of them and they are absolutely awesome.! normally I would need to lay on two pillows to try and get comfortable but with these pillows I just lay on one and I wake up with no neck pain. They really have a nice cooling effect. They actually puff up immediately after opening them. All you have to do is just shake them up and the pillow just puffs straight up.. It comes with extra cushioning if you want it to make it firmer and if you don’t want it as firm as it is, you can actually take some out. It really is such a beautiful pillow. It’s perfect in every way to me being such a picky pillow person.
You just lay your head down on it and it forms around your neck and your head and when you get up, it goes right back to its normal form. It doesn’t get flat and I love it. I completely recommend this to anyone who is a person who has a hard time finding a really good pillow.
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Reviewed in the United States on April 12, 2026
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