Crown Automotive 4798878 Engine Piston Ring Set Standard Size for 97-06 Jeep Wrangler TJ; 96-01 Cherokee XJ and 96-04 Grand Cherokee ZJ & WJ with 4.0L 6 Cylinder Engine
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Details
Piston Ring Set;
- : 4.0L I-6
- : Gasoline
*Please make a selection above to view weight, dimensions, specs of a specific product
Jeep Cherokee (XJ)
- 2001 Jeep Cherokee (XJ)
- 2000 Jeep Cherokee (XJ)
- 1999 Jeep Cherokee (XJ)
- 1998 Jeep Cherokee (XJ)
- 1997 Jeep Cherokee (XJ)
- 1996 Jeep Cherokee (XJ)
Jeep Grand Cherokee (WJ)
- 2004 Jeep Grand Cherokee (WJ)
- 2003 Jeep Grand Cherokee (WJ)
- 2002 Jeep Grand Cherokee (WJ)
- 2001 Jeep Grand Cherokee (WJ)
- 2000 Jeep Grand Cherokee (WJ)
- 1999 Jeep Grand Cherokee (WJ)
Jeep Grand Cherokee (ZJ)
- 1998 Jeep Grand Cherokee (ZJ)
- 1997 Jeep Grand Cherokee (ZJ)
- 1996 Jeep Grand Cherokee (ZJ)
Jeep Wrangler (TJ)
- 2006 Jeep Wrangler (TJ)
- 2005 Jeep Wrangler (TJ)
- 2004 Jeep Wrangler (TJ)
- 2003 Jeep Wrangler (TJ)
- 2002 Jeep Wrangler (TJ)
- 2001 Jeep Wrangler (TJ)
- 2000 Jeep Wrangler (TJ)
- 1999 Jeep Wrangler (TJ)
- 1998 Jeep Wrangler (TJ)
- 1997 Jeep Wrangler (TJ)
Jeep Wrangler Unlimited (LJ)
- 2006 Jeep Wrangler Unlimited (LJ)
- 2005 Jeep Wrangler Unlimited (LJ)
- 2004 Jeep Wrangler Unlimited (LJ)
Crown Automotive Engine Piston Ring Set Options
Part Number | Catalog # | Size | Price | ||||||
---|---|---|---|---|---|---|---|---|---|
4798878 | 51015-1005 | Standard Size | $113.99 | ||||||
4798878010 | 51015-1020 | .010 Oversize | $91.99 |
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Questions
Luis Jose G.
I would like to know what the dimensions of the rings are since I bought a set of rings and they do not fit into the piston groove.

Standard Size:
Bore Diameter: 3.875 inches (98.425 mm) or 98.43 mm (as seen in some listings, which could be a slight rounding difference). This is the diameter of the piston they are designed to fit.
Top Ring Thickness: 1.5 mm
Second Ring Thickness: 1.5 mm
Oil Ring Thickness: 4.0 mm
For the Oversized: 1.5mm (top), 1.5mm (second), and 4.0mm (oil) in thickness, designed for a 3.885 inch (98.685 mm) bore (0.010 inch oversized).
Bore Diameter: 3.875 inches (98.425 mm) or 98.43 mm (as seen in some listings, which could be a slight rounding difference). This is the diameter of the piston they are designed to fit.
Top Ring Thickness: 1.5 mm
Second Ring Thickness: 1.5 mm
Oil Ring Thickness: 4.0 mm
For the Oversized: 1.5mm (top), 1.5mm (second), and 4.0mm (oil) in thickness, designed for a 3.885 inch (98.685 mm) bore (0.010 inch oversized).