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Sealed Power E553K20 Plasma-Moly Piston Ring Set 4.270 in. Bore 0.020 Oversize 8-Cylinder

(Chevrolet C1500 1991-93, K2500 1991-2000, Express 3500 1996-2000, C3500 1991-2000, C2500 1991-2000, K3500 1991-2000, K2500 Suburban 1992-99 + 18 more models)

Part of: Sealed Power Plasma-Moly Piston Ring Set Bore

Other options in this family: Sealed Power R-10607.75MM Sealed Power R-10606.75MM Sealed Power R-10607 Sealed Power E229K40 Sealed Power E229K30

Manufacturer

Picture for manufacturer Sealed Power

Part Number

E553K20
6 reviews
Sale Price

$135.56

In Stock (10+)

delivery box

Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Sealed Power E-553K 20 is a premium plasma-moly piston ring set designed for 8-cylinder engines with a 4.270 in. bore (0.020 in. oversize). Engineered to meet or exceed OEM specifications, this set is a trusted choice for engine rebuilds requiring oversized rings due to cylinder wear or re-boring.

The top compression ring features a Plasma-Moly facing — one of the most advanced ring coating technologies available — delivering superior friction reduction, exceptional scuff resistance, and long-term durability under demanding conditions. The second compression ring uses a cast iron face for reliable sealing, while the oil control ring is constructed from stainless steel with standard tension for consistent oil management.

Key Features:

  • Bore Size: 4.270 in. (0.020 in. oversize)
  • Ring Thickness: 5/64 in. top, 5/64 in. second, 3/16 in. oil
  • Top Ring Material: Ductile iron with Plasma-Moly facing
  • Second Ring Material: Iron with cast iron facing
  • Oil Ring Material: Stainless steel, standard tension
  • Designed for pistons with shallow piston ring grooves
  • Standard ring end gaps for straightforward, drop-in installation
  • Seals mild- to high-compression engines and guards against oil blowby
  • Manufactured under ISO & QS certified processes

Cross-reference: Clevite 553K020. Sealed Power is a professional-grade brand under the Mahle family, backed by decades of engine component engineering expertise.

Products specifications

Fits

Chevrolet C1500 1991-93, K2500 1991-2000, Express 3500 1996-2000, C3500 1991-2000, C2500 1991-2000, K3500 1991-2000, K2500 Suburban 1992-99, P30 1991-99, G30 1991-96, C2500 Suburban 1992-99, R3500 1991, R2500 Suburban 1991 + 13 more models

Agricultural Equipment

N

Application Specific

Y

Car Light Truck

Y

Engine Specific

Y

Freight Class

55

Heavy Duty Truck

N

High Performance

N

Industrial Off Highway Equipment

N

Marine

N

Medium Duty Truck

N

Motorcycle ATV

N

Non Vehicle Specific

N

Oversize Inch

.015

Personal WaterCraft

N

Small Engine

N

SnowMobile

N

Transmission Specific

N

Feature 2

Decreases friction

What is in the box

In the box: engine set of piston rings

Feature 1

The face of the top rings are coated with the latest generation Plasma-Moly

Feature 3

Very resistant to scuffing

Oil Ring Design

3 Piece Flex Vent

Oversize (in)

0.020

2nd Ring Face Design

Reverse Torsional

Oil Ring Width (in)

3/16

Oversized Amount

0.020

2nd Ring Material

Grey Iron

Bore Size (in)

4.2500

Top Ring Material

Steel w/Moly

Outside Diameter

4.2700

Top Ring Radial Wall Thickness

0.154

Top Ring Face Design

Barrel Face

Ring Set Groove Widths (in)

5/64 x 5/64 x 3/16

Oil Ring Design

SS50U

Outside Diameter (in)

4.2700

Cylinder Quantity

8

Radial Wall Thickness - Top (in)

0.154

Top Ring Width (in)

5/64

Bore Diameter

4.2500

2nd Ring Width (in)

5/64

File Fit (Y/N)

N

File Fit

No

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