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*Compatibility Chart:
1, Air suspension spring bags installed on the Truck, Coach and Trailer are designed usually as generic types.
2, Firestone Part Number collected all the air suspension model, which could be used as an Integration Code while searching on eBay or Amazon.
3, You can distinguish specific model of air suspension spring bags on your Autotruck/Heavy-Duty Truck/Touring Car/Passenger Coach/Trailer by checking original SPN(Supplier Part Number) listed as below, all of which has a consistent one-to-one match with specific Firestone Part Number.
Toyota Tundra
Toyota Tundra 1794 5.7L 2014-2021
Toyota Tundra Base 4.0L 2007-2013
Toyota Tundra Base 4.6L 2010-2013
Toyota Tundra Base 4.7L 2007-2009
Toyota Tundra Base 5.7L 2007-2013&2020-2021
Toyota Tundra Limited 4.6L 2010
Toyota Tundra Limited 4.7L 2007-2009
Toyota Tundra Limited 5.7L 2007-2021
Toyota Tundra Ltd 5.7L 2017
Toyota Tundra Nightshade 5.7L 2021
Toyota Tundra Platinum 4.6L 2010
Toyota Tundra Platinum 5.7L 2010 -2021
Toyota Tundra SR 4.0L 2014
Toyota Tundra SR 4.6L 2014-2019
Toyota Tundra SR 5.7L 2014-2021
Toyota Tundra SR5 4.0L 2007-2011
Toyota Tundra SR5 4.6L 2010-2011&2013-2019
Toyota Tundra SR5 4.7L 2007-2010
Toyota Tundra SR5 5.7L 2007-2021
Toyota Tundra TRD 5.7L 2015-2017&2019-2021
Toyota Tundra Trail 5.7L 2021
*Air Suspension Structure:

1. Stud
A permanent part of the bead plate assembly used to attach the airspring to the suspension.
2. Combo Stud
Combination mounting stud and air fitting.
3. Blind Nut
A permanent part of the bead plate assembly providing an alternate mounting system to the stud.
4. Air Fitting Hole
A tapped hole usually 1/4" N.P.T. providing air entrance for the part.
5. Bead Plate
Permanently crimped onto the bellows at the factory allowing complete part leak testing prior to shipment.
6. Bellows
The heart of an Airide spring. Includes at least four plies, or layers, of material–an inner layer, two plies of cord-reinforced fabric, and an outer layer.
7. Bumper (Optional)
A solid molded rubber fail-safe device used on many suspension applications. Prevents excessive damage to vehicle and suspension in the case of sudden air pressure loss.
8. Piston
The lower section of the 1T and 1X style of airspring made from aluminum, steel or fiber reinforced plastic. Provides lower mounting arrangement for the airspring in the form of tapped holes or studs.
9. Piston Bolt
Attaches the piston to the bellows assembly. Extended, in some cases, to serve as a means of attaching the spring to the suspension.
10. Girdle Hoop
A ring between the convolutions of the convolutedtype air spring.
*Generation & Evolution:
Toyota Tundra
XK30/XK40 First generation (1999-2006)
XK50 Second generation(2007-2021)
XK70 Third generation(2021-present)
*Features and Benefits:
*OEM Part Number:
W21-760-2445
*Item Specifications:
2x Heavy Duty Double Bellow Air Ride Suspension bags
4x Upper and lower mounting brackets
Mounting Hardware
Notes : Please double confirm the compatibility as well as the OEM number before purchasing.
Instruction is not included. Professional installation is recommended.
| Item Specifics | |
|---|---|
| Brand | SDP4 |
| Manufacturer Part Number | CN131197M01 |
| Platform | Toyota F1 |
| Placement on Vehicle | Rear;Upper;Lower;left;Right |
| Part Type | Suspension Lift Kit |
| Included Hardware | Air Springs;Air Line;Instruction;Brackets;Mounting Hardware |
| Fitment Type | Direct Replacement |
| Adjustable | Yes |
| Warranty | 1 Year |
| Greasable or Sealed | Sealed |
| Interchange Part Number | Air Helper Spring Bag Suspension Leveling kit |
| Other Part Number | Firestone Ride-Rite 2445,W21-760-2445 |
| Custom Bundle | No |
| Bundle Description | NO |
| Modified Item | No |
| Modification Description | NO |
| Applicable Regions | Suspension kit |
| Superseded Part Number | W21-760-2445 |
| Return Policy | 30 Days Free Return Or Exchange |
| Quantity | 1 set |
| Handling Time | 1 days |
| Note | Instruction Included |
| Important Notice | Just like the picture;Professional installation required |
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Local pick up is not available.
Items will be shipped within 24 hours after getting your verified payment.
We offer 24 hours dispatch and estimated delivery time is 3-5 business days, except weekend and other irresistible factors.
We stand behind every product we sell.
All of our brand new items come with a 30-Day money-back or exchange guarantee.
Please contact us by eBay email first before you return the item.
Please confrim the Compatibility before you purchase.

Rear Air Suspension Tow Assist Spring Bag Over Load Kit For 07-21 Toyota Tundra
*Compatibility Chart: 1, Air suspension spring bags installed on the Truck, Coach and Trailer are designed usually as generic types. 2, Firestone Part Number collected all the air suspension model, which could be used as an Integration Code while searching on eBay or Amazon. 3, You can distinguish specific model of air suspension spring bags on your Autotruck/Heavy-Duty Truck/Touring Car/Passenger Coach/Trailer by checking original SPN(Supplier Part Number) listed as below, all of which has a consistent one-to-one match with specific Firestone Part Number.
Toyota Tundra Toyota Tundra 1794 5.7L 2014-2021
*Air Suspension Structure:
1. Stud
2. Combo Stud
3. Blind Nut
4. Air Fitting Hole
5. Bead Plate
6. Bellows The heart of an Airide spring. Includes at least four plies, or layers, of material–an inner layer, two plies of cord-reinforced fabric, and an outer layer.
7. Bumper (Optional)
8. Piston
9. Piston Bolt
10. Girdle Hoop
*Generation & Evolution: Toyota Tundra XK30/XK40 First generation (1999-2006) XK50 Second generation(2007-2021) XK70 Third generation(2021-present)
*Features and Benefits:
*OEM Part Number: W21-760-2445
*Item Specifications:
Notes : Please double confirm the compatibility as well as the OEM number before purchasing.
All rights reserved. |
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