Sealed H418CP 40 engine piston for the 1975-1979 Ford F-150 V8 7.5L and other vehicles carries combustion force from the cylinder to the connecting rod.
- Helps improve cylinder sealing for less blow-by
- Retains standard ring gaps in top groove
- DUROSHIELD skirt-coated piston
- Moly-graphite coating to extend engine life
- Reduces friction for higher fuel economy
- Prevents damage from inadequate lubrication on start-up
Quick facts
- Part: Sealed H418CP 40 engine piston
- Fits: 1975-1979 Ford F-150 V8 7.5L and other vehicles
- Material: Hypereutectic
- Condition: New
Oil burning, blow-by or a knock from the cylinders can be signs of worn pistons, but these signs alone do not prove the pistons are at fault; worn valve seals can also let oil burn. This V8 takes one piston in each cylinder, eight in all.
Fits
The fitment spans a wide range of Ford, Lincoln and Mercury models, including the 1973-1979 Ford F-250 V8 7.5L and the 1973-1979 Ford F-350 V8 7.5L. If your car is not one of these, look it up in the "Vehicles it fits" section.
Specifications
Fit and size
- Quantity per vehicle: 8
- Bore diameter: 4.3600 in
- Oversize: 0.040 in
- Piston pin outside diameter: 1.0402 in (26.421 mm)
- Compression height: 1.752 in
- Pin offset: 0.06 in (1.524 mm)
- Top and second compression ring thickness: 0.0781 in each
- Oil ring thickness: 0.1875 in
Build and materials
- Piston material: Hypereutectic
- Piston head type: Recessed
- Construction: cast piston set
- Skirt coating: DUROSHIELD
- Condition: New
- Country of origin: Mexico
In the box
One engine piston set. Assembly lubricant is not included.
Interchange: P4206.40 · P1548(8)040
P718040 · 9H3110040 · 1003P40 · H3110040 · Z3294040
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
P718040, 9H3110040, P4206.40, P1548(8)040, 1003P40, H3110040, Z3294040
Frequently Asked Questions
Will the Sealed H418CP 40 piston set fit a 1973-1979 Ford F-250 V8 7.5L?
Yes. Sealed H418CP 40 is listed for the 1973-1979 Ford F-250 V8 7.5L. For any other model, look in the "Vehicles it fits" section.
Does the Sealed H418CP 40 engine piston set come with assembly lubricant?
No. Assembly lubricant is not included with this piston set, so it has to be bought separately.
What oversize is the H418CP 40 piston, and what bore diameter is listed?
Sealed H418CP 40 is 0.040 inch oversize, and its listed bore diameter is 4.3600 inches.
Which signs can show worn pistons in a 7.5L V8?
Blow-by, oil burning and a knock from the cylinders can all be signs of piston wear. A shop can run a compression or leak-down test to check.
What does the DUROSHIELD skirt coating on this Sealed piston do?
This piston has a DUROSHIELD skirt coating. Its moly-graphite coating reduces friction and prevents damage from inadequate lubrication on start-up.
