Darton MID Sleeves for Dodge CALIBER SRT-4 86mm to 90mm 800-180

Bore 3.370
O.D. 3.850
Wall 0.240
OAL 5.475
Flange Thickness 0.400
Flange Diameter 4.625
Application 86mm to 90mm Max.


Darton MID Sleeves are the best sleeves on the market because of their strength and fitment. Their flanged tops align against each other while still allowing coolant to flow through them. (wet sleeves)

MID stands for "Modular Integrated Deck". If you notice the sides of the top of the sleeves are notched so they mate up flush against each other, providing a full rigid structure when assembled, but still able to be replaced individually if needed. As shown in the photo, the top flange has coolant passages and the outside surface of the sleeve contains "fins" that help reduce heat soak within the sleeve, helping keep the heat out of your internals where it could cause damage cracking, warping, etc.

NOTE:
ALL Darton Sleeves come from the factory slightly smaller than stock bore. ALL Darton sleeves must be finish bored and honed to the specs of the pistons going into them. You CAN NOT install a piston into ANY Darton sleeve the way it arrives from the factory. This ensures that you will get the exact proper piston-wall clearance to provide a tight seal in your engine. Your machine shop already knows this, and now so do you.