Details
SBI - Valves - 01268 - Intake; 1.651 Head Diameter,OEM # D2DZ6507E
Specifications
Head Diameter - 1.651
Length - 4.260
Seat Angle - 44
Stem Diameter - 0.3103
Interchanges
AE Clevite - 251717
Dana/Perfect Circle - 2111936
Dynagear/Manley - S1584
Elgin - I1584
Federal Mogul/ Sealed Power - V1970
Ford - D2DE6507AA, D2DE6507EA, D2DZ6507A, D2DZ6507E
Martin Wells - 157IN
Melling - V1268
Pioneer - VI1584
TRW - V2531, V3987
Wolverine - V2531
OEM Part Number Cross Reference(s): 501231
Warranty Information
Overview
We stand behind every part we sell — new, rebuilt, or used. While RF Engine is not the manufacturer and cannot extend additional warranties, we do guarantee that each product will arrive as described, in usable condition, and free from material defects or misrepresentation.
Warranty Coverage
- New Parts: Covered under the original manufacturer’s warranty. All terms and coverage are set by the manufacturer. Copies available upon request.
- Rebuilt, Reconditioned, and Used Parts: Backed by an inspection-only warranty unless otherwise stated. As with new parts, RF Engine cannot provide further warranty coverage beyond the manufacturer’s terms.
- No Additional Warranty: RF Engine does not offer any express or implied warranties. However, if an issue arises, we are here to assist and will support you through any applicable manufacturer claim process.
Our Guarantee
All parts are guaranteed to be in the condition stated at the time of sale and free from misrepresentation. If something isn’t right, we’ll work with you to resolve it — including returns, exchanges, or refunds when appropriate.
- We sell parts — we don’t make them — but we stand behind what we sell.
- Guaranteed to match the description or your money back.
- Manufacturer’s warranty applies where available; we’ll help if you ever need it.
Used Parts — What to Expect
Used parts are cleaned, inspected, and guaranteed to be usable, but please note:
- They often have signs of wear, surface rust, blemishes, or cosmetic imperfections.
- They may include old gaskets or residue and likely require further cleaning or machining before installation.
- They are not refurbished, remanufactured, or restored to like-new appearance.
We recommend careful inspection and strongly encourage installation by a qualified heavy-duty diesel mechanic.
- Worn, not worn out — used parts may show signs of age but are fit for service.
- All used parts are tested for usability, not appearance.
Questions?
If you have questions about a part’s condition, warranty, or how we handle returns and guarantees, feel free to contact us. We’re here to help.
Last Updated: June 22, 2025
Recently Viewed
Head Bolt Kit for John Deere 404 (Late), 466 Diesel (Early)
Deutz F2L511 Inframe-Overhaul Engine Rebuild Kit
Inframe-Overhaul Engine Rebuild Kit for John Deere 4045D Diesel 4.5L L4
Allis Chalmers 153, 230 Liner O-Ring
Fiat N45 Diesel Head Gasket, 2830919
Cummins 4BT 3.9L Inframe-Overhaul Engine Rebuild Kit - Turbocharged (Piston 3802090, 3903582)
Inframe Engine Kit
Continental F244, F245 Gas Camshaft Gear, F400H405
Continental Y69, LY69, PY69, Y4069 Gas Piston Pin Bushing, Y400G00234
John Deere 6125, 12.5L Connecting Rod Good Used R519614, R501566
Inframe Engine Kit
Wisconsin V465D Gas Rocker Arm Assembly, FX166A
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.