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Thumbnail Filmstrip of Spring Pro 886401, Used in Spring Pro 882299 Helper Kit, Replaces Firestone 6401 Air Helper Springs Images
Product Details
- Special Notes
- none
- Product Description
- Sold as each (one air spring)
- Spring Pro brand replacement air spring
- Replaces Firestone 224C style PN# 6401 air bag
- Combo Air Stud: 3/4"-16 outside, 1/4" NPT inside
- Top Mounting: 3/4"-16 combo air stud and alignment button
- Bottom Mounting: 3/8"-16 threaded hole in center
- Compressed Height: 2.80"
- Extended Height: 8.75"
- Ride Height: 6" - 7"
- Max Diameter: 8"
This air bag replaces the air springs used in the following Firestone helper spring kits:
2299, 2330, 2400, 2450
- 2006-2008 Dodge Ram 1500 Mega Cab
- 2003-2011 Dodge Ram 2500, 3500
- 1999-2004 Ford F-2350 (over 8500 GVWR)
- 1999-2004 Ford F-350
- 2005-2007 Ford F-250, F-350
- 2008-2010 Ford F-250, F-350
- 2011 Ford F-250, F-350 (gas only, no factory in-bed hitch)
Cross References: 6401, 224C, 886401
A cross reference listing means that this item should be a suitable replacement
for the part numbers listed. You should check the description to be sure it will work in your application.
About Spring Pro
We've been selling Spring Pro air springs on AnythingTruck.com since 2010. They're made in Europe, and each Spring Pro air spring is designed to meet or exceed the quality of OEM springs available here in North America.
You can be assured that every Spring Pro air spring has been designed to be an exact replacement for the Firestone, Goodyear, or Continental Contitech air spring it's listed as replacing. One really nice feature is that Spring Pro part numbers are printed on the rubber bellows allowing easy identification when it's time for replacement.
Customer Ratings & Reviews
Ratings Snapshot
out of 5
5
(1)
4
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2
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1
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Would recommend this product.
100%
out of 5
5
(1)
4
(0)
3
(0)
2
(0)
1
(0)
Would recommend this product.
100%
Replacement air bag
Digger Doug
Location:
Date: June 8, 2025
I had a airbag that had deteriorated to the point of replacement. Ordered the replacement by numbers on existing bag. Was exact replacement. Works as it should.
Verified Buyer
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