Product Description
Restore compression and oil control on your 6.0L with the MAHLE S41940.030 piston ring set (+.030"). Built to OE standards with a plasma-moly top ring and OE-grade materials, this per-cylinder set is the right choice when your 2003–2007 Ford Power Stroke (VT365) has been bored +0.030" to 3.770". Sold per cylinder—order 8 for a complete engine.
Fitment
- 2003–2007 Ford F-250 / F-350 / F-450 / F-550 Super Duty — 6.0L Power Stroke (VIN P)
- Navistar VT365 equivalents requiring +.030" oversize (verify bore size after machining)
Cross-Reference / Related Mahle Sizes (Mahle products on cppdiesel.com only)
- Standard Bore: MAHLE S41940 (STD)
- +.010" Oversize: MAHLE 41940.01
- +.020" Oversize: MAHLE S41940.020
- +.040" Oversize: MAHLE 41940.04
What’s Included
- Complete ring pack for one cylinder (+.030") — order 8 sets for a full engine
- Plasma-moly top ring, second ring, and oil control assembly
FAQ
Is this a full engine set?
No. This listing is per cylinder. Order 8 sets to service all pistons.
How do I know I need +.030"?
Measure the finished cylinder bore after machining; +.030" corresponds to a ~3.770" bore.
Will this fit my truck?
Yes—if you have a 2003–2007 6.0L Power Stroke and your machinist specified +.030" rings.
What materials are the rings?
OE-grade materials with a plasma-moly faced top ring for durability and fast seating.
Specifications for Mahle S41940.030
| Attribute | Value |
|---|---|
| Brand | Mahle |
| Part Number | S41940.030 |
| UPC | 027067820280 |
| GTIN | 027067820280 |
| Engine Compatibility | 2003–2007 Ford 6.0L Power Stroke (VT365) |
| Oversize / Bore | +.030" (~3.770" bore) |
| Quantity | Per cylinder (8 required per engine) |
| Package Dimensions | 4.25" × 2.00" × 4.25" |
| Shipping | Calculated at Checkout |
| Prop 65 | Not specified by manufacturer. See www.P65Warnings.ca.gov. |
