$0.00
16
Cummins 4B, 4BT, 4BTA 3.9L New Front / Rear Sump Oil Pan | Replaces 3901049
New
$15034
7
Cummins 4B, 4BT, 4BTA 3.9L Used Front / Rear Sump Oil Pan | Replaces 3901049
Used
$7874
Details
New aftermarket front or rear sump engine oil pan.
Warranty Information
Reliance Power Parts Warranty Policy
The Reliance Power Parts (RPP) warranty policy covers parts and labor necessary to repair a warrantable failure to the functional condition of the application that existed immediately prior to the failure, as detailed below. This warranty applies to direct customers of RPP only and is non-transferable.
Coverage Periods
- New Internal Engine Parts (Ag/Industrial): 1 year from invoice date, unlimited miles/hours
- Engine Overhaul Kits (Heavy-Duty On-Highway): 2 years from invoice date, unlimited miles/hours
- New Engine Accessories: 1 year from invoice date, parts replacement only
- Remanufactured Engine Accessories: 6 months from invoice date, parts replacement only
- Remanufactured Engine & Drivetrain Parts: 6 months from invoice date, parts replacement only
- Drivetrain Parts: 1 year from invoice date, parts replacement only
- Complete Engines & New Long Blocks (Reliance Manufactured): 6 months from invoice date, parts replacement only
- Remanufactured Long/Short Blocks & New Short Blocks (Reliance Manufactured): 90 days from invoice date, parts replacement only
Engine accessories include turbochargers, fuel injectors, hydraulic pumps, engine oil pumps, oil coolers, water pumps, and electrical components.
Manufacturer's Warranty Items
To serve a wider application base, RPP offers lower volume, rare application, and remanufactured parts from a variety of manufacturers. These parts will be noted on your invoice as subject to a "Manufacturer's Warranty" policy and are not covered under this policy. Engines, long blocks, medium blocks, and short blocks produced by any company other than Reliance are solely covered by the manufacturer's warranty. Contact your Reliance representative for details.
Parts & Labor Coverage
- Parts: Covered at current customer pricing using new or remanufactured RPP approved parts
- OEM/Outside Parts: When RPP parts are available, OEM parts will be credited at RPP pricing. Parts not available from RPP will be covered at billed rate with invoice required
- Labor: Offered at RPP's discretion, not to exceed published flat-rate times and maximum regional wholesale hourly labor rate
- Holiday/Overtime Rates: Not covered
What's Not Covered
This warranty does not cover failures resulting from:
- Owner or operator abuse or neglect
- Operation without adequate coolant, fuel, or lubricants
- Over-fueling or over-speeding
- Lack of maintenance of lubricating, coolant, or air intake systems
- Improper storage, starting, warm-up, run-in, or shut-down practices
Coverage does not include:
- Troubleshooting or diagnostic time
- Towing, transport, or down-time
- Rental fees or incidentals
- Delivery charges, travel, meals, or lodging
- Business losses, docking, or harbor charges
Responsibilities
- Installer: Ensure parts are correct for the application and install according to OEM procedures, specifications, and accepted industry standards
- Owner: Operate and maintain equipment as specified in OEM operation and maintenance manuals
How to File a Claim
- RPP must be notified prior to the end of the warranty period
- All warranty repairs must be authorized by RPP technical staff
- Request a Warranty Claim Form for the return of parts
- Return all claimed parts to the indicated location within 30 days of receiving a Return Merchandise Authorization
- Include failed parts, completed Warranty Claim Form, and copies of related work orders or invoices
- Ship parts freight pre-paid in a condition that makes examination possible
- Parts received without a Warranty Claim Form will be returned freight collect
Important Notes
- Professional Installation Required: We strongly recommend installation by a qualified technician to ensure proper break-in and operation
- Keep Your Records: Retain your invoice and service records for warranty claims
- Questions?: If you're unsure about coverage or need assistance, please contact us
The warranties set forth herein are the sole warranties made by RPP regarding its parts. RPP makes no other warranties, expressed or implied, of merchantability or fitness for a particular purpose.
Details
Used front or rear sump engine oil pan.
Stock photo shown — representative of the part, not the exact item you'll receive. Used parts may show normal wear (scuffs, surface rust, minor blemishes) but are guaranteed to be within useable spec or remachinable to spec. Remanufactured parts have been professionally cleaned and remachined back to OEM specifications but may still exhibit minor cosmetic imperfections such as surface discoloration or slight patina — these do not affect fit, function, or longevity.
Warranty Information
Overview
We stand behind every part we sell — new, rebuilt, or used. While RF Engine is not the manufacturer of any product we sell, we are committed to ensuring that each part is accurately represented, inspected where applicable, and delivered in the condition described at the time of sale.
New Parts
All new parts are warranted by the original manufacturer only and are subject to that manufacturer's specific terms and conditions. RF Engine and its subsidiaries do not offer any additional warranty or guarantee of any type, express or implied, on new products. Due to the vast number of manufacturers we work with, no specific warranty details can be outlined here. Please contact us for warranty information pertaining to your specific product.
Rebuilt, Remanufactured & Reconditioned Parts
Rebuilt, remanufactured, and reconditioned parts are used components that have been machined, reassembled, or otherwise restored toward original specifications by a third-party machine shop — not by RF Engine. These parts carry an inspection-only warranty unless otherwise expressly stated in writing by RF Engine at the time of sale. All products must be inspected before installation. By installing the product, the customer is expressly accepting, completely and without reserve, the product and all liability from the point of receipt forward.
Used Parts
Used parts are sold strictly on a representation basis. RF Engine attests that used parts are accurately described and within usable, serviceable condition at the time of sale. No warranty of performance, longevity, or fitness for a particular use is expressed or implied. Used parts are not refurbished, remanufactured, or restored to like-new condition and may exhibit signs of wear, surface rust, blemishes, old gaskets, residue, or other cosmetic imperfections. Further cleaning or machining prior to installation may be required.
No original equipment manufacturer warranties used parts to secondary purchasers, and RF Engine does not extend any warranty beyond accurate representation of condition.
First-Party Purchaser Only
All warranties, representations, and assurances of quality or fitment extended by RF Engine apply exclusively to the original, direct purchaser. These do not transfer to any third party, whether through resale, gifting, or use of the part in a third-party repair or service. RF Engine assumes no obligation or liability to anyone other than the original buyer.
Claims
All claims must be submitted to RF Engine in writing, immediately following any issue and before performing any disassembly or repairs of any type. Unauthorized disassembly, repair, or a delay in claim notification will void any applicable warranty. RF Engine reserves the right to inspect all products involved in any warranty claim. All products being returned for inspection must be sent freight pre-paid.
At no time will any reimbursement exceed the original purchase price of the product in question. Freight charges incurred by the customer will not be refunded under any circumstances. Where a manufacturer's warranty applies, RF Engine will assist the buyer through the claim process; however, the final determination of any warranty claim is made by the manufacturer, not by RF Engine.
Limitation of Liability
RF Engine and its subsidiaries offer no warranty of any kind, either express or implied, with regard to the merchantability or fitness for a particular use of any product sold. RF Engine acts only as a broker with regard to any machine work or outside labor. Any warranty or claim against machine work or outside labor is to be taken up directly with the individual or organization that performed the work.
In no event shall RF Engine be liable for any incidental, consequential, or special damages, including but not limited to engine damage, equipment downtime, labor costs, lost revenue, or any other costs arising from the use or inability to use any product sold by RF Engine, regardless of whether RF Engine has been advised of the possibility of such damages.
Installation & Responsibility
We strongly recommend that all parts be inspected prior to installation and that installation be performed by a qualified heavy-duty diesel mechanic. By installing any product purchased from RF Engine, the customer expressly accepts the product and assumes all liability from the point of installation forward.
Questions?
If you have questions about a part's condition, warranty coverage, or our claims process, feel free to contact us. We're here to help.
Last Updated: June 22, 2025
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All specifications and numbers are provided for reference only and should be independently verified before use. While we guarantee our parts match their descriptions and accept returns for any discrepancies, we cannot be held liable for installation costs, modifications, or consequential damages. Questions about compatibility? Contact our parts experts at 800-828-6943, sales@dieselcranks.com, or via live chat, Mon-Fri 8am-5pm EST.
