- Description
- Shipping and Refund
- Verify Fitment
- Reviews
-
Brand: Automann
Product Level: Fleet Standard
Description: 4XPD/323, PD/401, PD/499, 2/788 25X29 C 5-3/8, 2/TB26
Applications: International
Unit Size: 1
Weight: 91 lbs
Pkg. Dims (in): 55.51 X 8.83 X 5.13
Specifications
| Attribute | Value |
|---|---|
| Spring Type | Parabolic Spring |
| Leaf Type | Uses Parabolic Extra Leaf TXL550 |
| Spring Eye | 2 |
| Eye Type (S.E./L.E.) | STD/STD |
| Width | 4 |
| S.E. (A) | 25 |
| L.E. (B) | 29 |
| Bushing A End (S.E.) | TB26, MTB76 |
| Bushing B End (L.E.) | TB26, MTB76 |
| Nos. Leaves | 2 |
| Arch (C) | 5-1/4 |
| Capacity | 5350 |
| MFG | I-H, Navistar |
| Notes (B. O. M) | 4X1/323 1/401 1/499 2/812*25X29 C:5-1/4 TB26/TB26 |
| Center Bolt Size | 1/2 X 3-1/2 |
| Center Bolt Head Size | 3/4D X 7/16H |
Includes
Shipping and Delivery
Efficient, transparent shipping built for the heavy-duty trucking industry — from small packages to full freight.
Estimated shipping times
In-stock orders placed before 6 PM ET are processed the same business day; some products require 24–48 hours of processing. Transit estimates below begin after processing.
| Method | Transit time | Notes |
|---|---|---|
| Small Package Saver | 3–7 business days | Ideal for items under 10 lb; often the method behind FREE SHIPPING items |
| Ground | 1–6 business days | Primary carrier UPS, occasionally FedEx |
| Second Day Air | 2–3 business days | Contact our sales team for details |
| Next Day Air | 1–2 business days | Contact our sales team for details |
| Canada | 1–6 business days | Customs may add time and require additional information |
| Large Package Rate | 3–5 business days | Residential deliveries; the carrier may call to schedule |
| Will Call (pickup) | — | Request by phone; no shipping or handling charges |
Good to know
Free shipping promotions
Free-shipping promotions ship USPS or UPS with a 3–7 business day transit time. Valid in the contiguous 48 United States.
Freight & oversize
Freight/LTL quotes are based on delivery to commercial addresses with official business hours. Non-commercial addresses may require additional fees.
Canada & international
Contact support@i40truckparts.com for a custom quote. Customers are responsible for duties, taxes, and other charges.
Damaged shipments
Report damage within 24–48 hours of delivery — call or email us and we handle the claim. Please do not contact the manufacturer. Related cancellations are coordinated with our customer service team.
Refused shipments & stock
You may refuse a shipment, but please contact us in advance. Refused shipments can incur return shipping charges and the initial shipping charges, which are deducted from the refund. If an item is temporarily out of stock after you order, we notify you promptly with your options.
About i40 Truck Parts
Heavy-duty truck and trailer parts sourced from reputable manufacturers, verified for fitment by real people, and shipped fast from Candler, North Carolina. Fleet managers, owner-operators, and mechanics trust us to keep their equipment moving.
Verify Fitment Form
Not 100% sure it fits? Submit your details below and our team will verify compatibility before you order.
Fitment verifications are answered during business hours — typically within 15 minutes.
Submit Your Fitment Request
Add as much detail as possible for the fastest and most accurate verification. Photos help a lot.
What to Include
Best info for fast verification
- VIN (preferred when available)
- Year / Make / Model
- Part number (if you have it)
- Part description and what it’s replacing
- Photos of the part, label, or the truck tag
Before you install
- If you’re unsure, wait for confirmation before installing.
- Installed/used parts may not be eligible for return.
Need help right now?
Phone: +1 (877) 898-0632
Email: support@i40truckparts.com
Hours: Mon–Fri · 8:00 AM – 10:30 PM ET
2212 Smokey Park Hwy #102
Candler, NC 28715