ModMax OEM Replacement Pistons are a great choice for a rebuild or an upgrade to change compression for street and mild race applicatons. These pistons are precision cast from High Silicon Hypereutectic aluminum alloys to exceed OEM specs. The special alloy allows for great heat transfer, low expansion for tight sealing, and even material distribution through the alloy to eliminate weak spots. They will fit all 4.6 SOHC or DOHC 2V or 4V engines (NOT 3V), or all 5.4 2V, 3V, or 4V engines. Any of our standard replacement ring sets or upgraded rings will fit these pistons. Whether you have press fit or bushed rods these pistons are equipped with retaining locks for the pins so they can work for either rod application.
Bore Sizes: Standard (3.552"), .020" over, .030" over
Compression Distance: 1.211"
Dish Volume: 12cc (Dished) no valve reliefs
Pin Size: OEM .866" Piston Pins - Standard Wall
Pin Retention: Full Floating with lock rings
Ring Sizes: 1.5mm-1.5mm-3mm
FOR YOUR COMPRESSION RATIO WITH THESE PISTONS PLEASE SEE THE CHART BELOW
COMPRESSION RATIOS
2V NON PI
2V PI
4.6- 4V ALL
5.4- 3V or 4V
12cc Dished with 4.6 Engine
8.9:1
10.0:1
9.0:1
12cc Dished with 5.4 Engine
8.5:1
9.4:1
8.6:1
Reviews
Average Customer Review:
( 6 )
Frank Frazer from Chandler, TX United States
October 22, 2019
Pistons
Pistons look great, much better than the uneven cast crap that was in the motor
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Michael Mora from San Antonio, TX United States
July 3, 2019
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Martin from Red Deer, AB Canada
April 2, 2019
New Pistons
Product was shipped promptly and received in goodcondition. Mod Max was the only place I could find various dish sizes to increase my compression ratio to exactly what I wanted. Thanks Mod Max.
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jeffrey Armstrong from dresden, ON Canada
October 22, 2016
good pistons
thats the pistons I wanted. I will see how it runs when I put it together. I will be ordering more from you
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Cody from Harrison, AR United States
May 5, 2016
good for price
These pistons are actually made by Enginetech, which is a low budget part company but they seem very good quality and have used many of their parts before without problems.
