This is a clamshell type piston ring
compressor. This ring compressor has a 4.589" bore diameter.
This tool assures proper piston installation, reducing the possibility
of broken rings. This ring compressor is made in the U.S.A. This ring compressor is made
for use with the pre 2004 International Navistar trucks: DT 466/ 570, DT
466/ 530E, 2007 MaxxForce 9, 2007 MaxxForce 10, 2007 MaxxForce DT, 2010 Maxxforce 9, 2010 Maxxforce 10, 2010 MaxxForce DT, 2013 N9 w/SCR, 2013 N10 w/SCR, and 9000i series. This ring compressor replaces the OTC Tools
ZTSE-4396
The ATC 4396 Piston Ring Compressor is a precision-engineered tool designed for professional heavy-duty repair of select Navistar / International diesel engines, including the DT 466, DT 570, DT 466E and MaxxForce 9/10 series. This clamshell-style compressor features a fixed 4.589″ bore (116.6 mm) and is made in the USA to ensure robust durability and repeatable performance during piston installation.
When installing pistons in these large-bore engine blocks, the proper ring compressor tool is critical. The ATC 4396 minimizes the risk of broken rings, ring gap misalignment, bore wall scoring and installation damage—common problems when using generic or undersized tools. This tool is compatible with pre-2004 DT466/570 engines and the 2007 onward MaxxForce and N-series vehicles.
Engine rebuilders, fleet maintenance facilities and heavy-duty truck service shops will appreciate the precision fit of the ATC 4396. Its rigid construction and carefully machined bore ensures consistent compression of the piston rings and smooth entry into the cylinder bore every time—saving time, avoiding rework and protecting expensive engine components.
Key Features & Benefits
-
Built to fit 4.589″ (116.6 mm) bore applications on Navistar/International DT 466/570 and MaxxForce-series engines.
-
Direct replacement for the OEM ZTSE-4396 ring compressor tool originally listed by International.
-
Clamshell design keeps piston rings compressed uniformly, reducing chance of ring breakage or damage during installation.
-
Made in the U.S.A. using heavy-duty materials tailored for professional diesel rebuilders.
-
Ideal for service procedures on in-frame or out-frame engine rebuilds of big-bore diesel engines—where accuracy, reliability and speed matter.
-
Helps maintain engine build quality, preserves bore integrity, and supports long-term reliability for heavy-duty trucks.
Applications
Use the ATC 4396 during piston and ring installation on:
-
Navistar/International DT 466, DT 570, DT 466E engines
-
MaxxForce 9, MaxxForce 10, MaxxForce DT, N9/N10 (with 4.589″ bore) engines
-
Heavy-duty truck fleets, engine remanufacturing operations, and diesel service environments requiring bore-specific piston installation tools.
The ATC 4396 Piston Ring Compressor is a precision-engineered tool designed for professional heavy-duty repair of select Navistar / International diesel engines, including the DT 466, DT 570, DT 466E and MaxxForce 9/10 series. This clamshell-style compressor features a fixed 4.589″ bore (116.6 mm) and is made in the USA to ensure robust durability and repeatable performance during piston installation.
When installing pistons in these large-bore engine blocks, the proper ring compressor tool is critical. The ATC 4396 minimizes the risk of broken rings, ring gap misalignment, bore wall scoring and installation damage—common problems when using generic or undersized tools. This tool is compatible with pre-2004 DT466/570 engines and the 2007 onward MaxxForce and N-series vehicles.
Engine rebuilders, fleet maintenance facilities and heavy-duty truck service shops will appreciate the precision fit of the ATC 4396. Its rigid construction and carefully machined bore ensures consistent compression of the piston rings and smooth entry into the cylinder bore every time—saving time, avoiding rework and protecting expensive engine components.
Key Features & Benefits
-
Built to fit 4.589″ (116.6 mm) bore applications on Navistar/International DT 466/570 and MaxxForce-series engines.
-
Direct replacement for the OEM ZTSE-4396 ring compressor tool originally listed by International.
-
Clamshell design keeps piston rings compressed uniformly, reducing chance of ring breakage or damage during installation.
-
Made in the U.S.A. using heavy-duty materials tailored for professional diesel rebuilders.
-
Ideal for service procedures on in-frame or out-frame engine rebuilds of big-bore diesel engines—where accuracy, reliability and speed matter.
-
Helps maintain engine build quality, preserves bore integrity, and supports long-term reliability for heavy-duty trucks.
Applications
Use the ATC 4396 during piston and ring installation on:
-
Navistar/International DT 466, DT 570, DT 466E engines
-
MaxxForce 9, MaxxForce 10, MaxxForce DT, N9/N10 (with 4.589″ bore) engines
-
Heavy-duty truck fleets, engine remanufacturing operations, and diesel service environments requiring bore-specific piston installation tools.