What does the '.040' in the product name mean?

The '.040' indicates that these pistons are 0.040 inches undersize. This means they are intended for use in an engine where the cylinders have been bored out to this specific dimension to clean up wear or damage from previous use.

Do these pistons come with everything needed for installation?

Yes, this set includes the pistons with the rings already mounted, as well as the necessary piston pins and clips. This provides a convenient, ready-to-install package for your engine rebuild.

Are these pistons suitable for all 7.3L IDI diesel engines?

This piston set is specifically designed for the 7.3L IDI (Indirect Injection) diesel engine found in certain Ford trucks and vans between 1988 and 1994. It is not compatible with other engine variants or model years.

Mahle OE 7.3L IDI Diesel Piston Set .040 w/ Rings 2243508040

Name: Mahle OE NAVI 7.3L IDI Diesel V8 .040 w/ PC Piston Set (Set of 8)
Brand: Mahle OE
SKU: mahle-oe-mahle-oe-navi-7-3l-idi-diesel-v8-040-w-pc-piston-set-set-of-8-t14-53608
Price: 597.21 USD
Availability: BackOrder

Mahle OE NAVI 7.3L IDI Diesel V8 .040 w/ PC Piston Set (Set of 8)

$597.21

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Mahle OE NAVI 7.3L IDI Diesel V8 .040 w/ PC Piston Set (Set of 8). These pistons are .040 undersize and come with rings pre-installed.

Key Features

Fits 1988-1994 Ford E-250 Econoline Club Wagon, E-350 Econoline Club Wagon, E-350 Econoline, F-250, F-350, F-59 Commercial Stripped Chassis, and F-Super Duty vehicles with the 7.3L IDI diesel engine.
This is a set of 8 pistons, sized .040 inch undersize for engine rebuilding.
Pistons include compensated ring grooves for proper ring loading and oil control.
Expansion-controlled design reduces engine noise, wear, and emissions.
Pistons come with piston rings pre-mounted for easier installation.
Includes piston pins and clips for a complete assembly.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

If you're rebuilding the engine in your 1988-1994 Ford truck or van with the 7.3L IDI diesel, a quality piston set is crucial for getting your power back. This set from Mahle OE is built to the original equipment specifications, meaning they'll perform just like the factory pistons did when your vehicle was new. They are designed to fit a range of Ford E-Series vans and F-Series trucks from that era, ensuring a proper fit for your rebuild project.

Mahle is a major OE piston manufacturer, and these pistons reflect that expertise. They feature compensated ring grooves, which help ensure the piston rings are loaded correctly for good oil control and reduced blow-by. The expansion-controlled design means they have tight clearances when cold, which helps reduce engine noise, wear, and emissions, while also improving oil control. This set comes with the piston rings already mounted, and includes the piston pins and clips, so you have everything ready to go for installation. This saves you a step and ensures the rings are properly seated from the start.

This set includes eight pistons, enough for a complete V8 engine. Because these are .040 undersize, they are intended for engines where the cylinders have been bored out to this dimension to clean up any wear or damage. Always confirm your cylinder bore size before ordering to ensure you get the correct fitment for your engine rebuild.