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Jeep Willys Engine Block Parts

This page brings together engine block parts for the Jeep Willys, covering model years 1941–1958. The range spans piston ring sets, individual piston rings, and engine mounts, with options in cast iron and OE-replacement styles. Choose your model year above and this page keeps only the engine block parts that fit your Jeep Willys. Each listing is matched to our vehicle fitment data before it appears here.

1 - 30 of 56 results

Best Seller Free Shipping
Picture of King Engine Bearings Connecting Rod Bearing Set Toyota

King Engine Bearings Connecting Rod Bearing Set Toyota

26 reviews
Vehicle Specific
from $9
In Stock (10+)
Picture for manufacturer King Engine Bearings
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Best Seller Free Shipping
Picture of MAHLE Premium Piston Ring Set Bore Plasma-Moly

MAHLE Premium Piston Ring Set Bore Plasma-Moly

72 reviews
Vehicle Specific
from $27
In Stock (10+)
Picture for manufacturer MAHLE
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Picture of Clevite Engine Crankshaft Main Bearing Sets

Clevite Engine Crankshaft Main Bearing Sets

70 reviews
Vehicle Specific
from $14
In Stock (10+)
Picture for manufacturer Clevite
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Picture of MAHLE Original Engine Piston Ring Set Oversize

MAHLE Original Engine Piston Ring Set Oversize

34 reviews
Vehicle Specific
from $20
In Stock (10+)
Picture for manufacturer MAHLE
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Picture of MAHLE Engine Piston Ring

MAHLE Engine Piston Ring

10 reviews
Vehicle Specific
from $26
In Stock (10+)
Picture for manufacturer MAHLE
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Picture of MAHLE Engine Piston Ring Set

MAHLE Engine Piston Ring Set

10 reviews
Vehicle Specific
from $5
In Stock (10+)
Picture for manufacturer MAHLE
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Picture of MAHLE Plasma-Moly Piston Ring Set Bore

MAHLE Plasma-Moly Piston Ring Set Bore

77 reviews
Vehicle Specific
from $9
In Stock (10+)
Picture for manufacturer MAHLE
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Picture of MAHLE Plasma-Moly Engine Piston Ring Set Bore

MAHLE Plasma-Moly Engine Piston Ring Set Bore

46 reviews
Vehicle Specific
from $27
4 left at this price
Picture for manufacturer MAHLE
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Picture of MAHLE Precision-Ground Performance Piston Ring Set

MAHLE Precision-Ground Performance Piston Ring Set

18 reviews
Vehicle Specific
from $29
In Stock (10+)
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Picture of MAHLE 41473CP.020 Engine Piston Ring Set Moly 3.524" Bore

MAHLE 41473CP.020 Engine Piston Ring Set Moly 3.524" Bore

46 reviews
Part: 41473CP.020
Vehicle Specific
$47.92
2 left at this price
Picture for manufacturer MAHLE
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Picture of MAHLE 50720 Engine Piston Ring Set Representative Photo, actual item may vary

MAHLE 50720 Engine Piston Ring Set

39 reviews
Part: 50720
Vehicle Specific
$104.52
Ships from manufacturer
Picture for manufacturer MAHLE
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Picture of MAHLE 41550CP-020 Engine Piston Ring Set Representative Photo, actual item may vary

MAHLE 41550CP-020 Engine Piston Ring Set

26 reviews
Part: 41550CP-020
Vehicle Specific
$65.19
1 left at this price
Picture for manufacturer MAHLE
Picture of MAHLE 50076CP Engine Piston Ring Set - Standard Bore Cast Ring Set

MAHLE 50076CP Engine Piston Ring Set - Standard Bore Cast Ring Set

6 reviews
Part: 50076CP
Vehicle Specific
$41.23
1 left at this price
Picture for manufacturer MAHLE
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Picture of MAHLE 41137CP-020 Engine Piston Ring Set

MAHLE 41137CP-020 Engine Piston Ring Set

78 reviews
Part: 41137CP-020
Vehicle Specific
$88.43
Ships from manufacturer
Picture for manufacturer MAHLE
Picture of MAHLE 50664CP Engine Piston Ring Set

MAHLE 50664CP Engine Piston Ring Set

50 reviews
Part: 50664CP
Vehicle Specific
$31.31
Ships from manufacturer
Picture for manufacturer MAHLE
Picture of MAHLE 50533CP Engine Piston Ring Set

MAHLE 50533CP Engine Piston Ring Set

17 reviews
Part: 50533CP
Vehicle Specific
$44.66
Ships from manufacturer
Picture for manufacturer MAHLE
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Picture of MAHLE 41247 Engine Piston Ring - Set Representative Photo, actual item may vary

MAHLE 41247 Engine Piston Ring - Set

28 reviews
Part: 41247
Vehicle Specific
$79.80
Ships from manufacturer
Picture for manufacturer MAHLE
Picture of MAHLE 51510CP.030 Premium Plasma-Moly Piston Ring Set +0.030" Oversize Bore Representative Photo, actual item may vary

MAHLE 51510CP.030 Premium Plasma-Moly Piston Ring Set +0.030" Oversize Bore

11 reviews
Part: 51510CP.030
Vehicle Specific
$35.87
Ships from manufacturer
Picture for manufacturer MAHLE
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Picture of MAHLE 41286CP.040 Original Engine Piston Ring Set Oversize - 040

MAHLE 41286CP.040 Original Engine Piston Ring Set Oversize - 040

71 reviews
Part: 41286CP.040
Vehicle Specific
$62.49
Ships from manufacturer
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Picture of MAHLE 51366CP Engine Piston Ring Set

MAHLE 51366CP Engine Piston Ring Set

17 reviews
Part: 51366CP
Vehicle Specific
$65.31
Ships from manufacturer
Picture for manufacturer MAHLE
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Picture of MAHLE 4007.060 Engine Piston Ring Set Oversize - 0.060

MAHLE 4007.060 Engine Piston Ring Set Oversize - 0.060

57 reviews
Part: 4007.060
Vehicle Specific
$64.57
Ships from manufacturer
Picture for manufacturer MAHLE
Picture of MAHLE 50620.060 Engine Piston Ring Set Representative Photo, actual item may vary

MAHLE 50620.060 Engine Piston Ring Set

17 reviews
Part: 50620.060
Vehicle Specific
$38.98
Ships from manufacturer
Picture for manufacturer MAHLE
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Picture of MAHLE 41226 Engine Piston Ring Set Representative Photo, actual item may vary

MAHLE 41226 Engine Piston Ring Set

43 reviews
Part: 41226
Vehicle Specific
$72.57
Ships from manufacturer
Picture for manufacturer MAHLE
Picture of MAHLE 51874CP.030 Engine Piston Ring Set Oversize - 030 Representative Photo, actual item may vary

MAHLE 51874CP.030 Engine Piston Ring Set Oversize - 030

33 reviews
Part: 51874CP.030
Vehicle Specific
$31.56
Ships from manufacturer
Picture for manufacturer MAHLE
Picture of MAHLE 51457CP Engine Piston Ring Set

MAHLE 51457CP Engine Piston Ring Set

19 reviews
Part: 51457CP
Vehicle Specific
$27.97
Ships from manufacturer
Picture for manufacturer MAHLE
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Picture of MAHLE 40533CP.020 Premium Engine Piston Ring Set Over - 0.020

MAHLE 40533CP.020 Premium Engine Piston Ring Set Over - 0.020

36 reviews
Part: 40533CP.020
Vehicle Specific
$83.83
Ships from manufacturer
Picture for manufacturer MAHLE
Picture of MAHLE 5007.080 Engine Piston Ring Set Oversize - 0.80mm

MAHLE 5007.080 Engine Piston Ring Set Oversize - 0.80mm

12 reviews
Part: 5007.080
Vehicle Specific
$35.10
Ships from manufacturer
Picture for manufacturer MAHLE
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Picture of MAHLE 42209.010 Engine Piston Ring Set Representative Photo, actual item may vary

MAHLE 42209.010 Engine Piston Ring Set

30 reviews
Part: 42209.010
Vehicle Specific
$116.53
Ships from manufacturer
Picture for manufacturer MAHLE
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Picture of MAHLE 40533CP.060 Plasma-Moly Engine Piston Ring Set +.060 Overbore

MAHLE 40533CP.060 Plasma-Moly Engine Piston Ring Set +.060 Overbore

31 reviews
Part: 40533CP.060
Vehicle Specific
$71.33
Ships from manufacturer
Picture for manufacturer MAHLE
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Picture of MAHLE 50203CP.040 Standard Piston Ring Set Big Block 4.290" Bore +.040 Over

MAHLE 50203CP.040 Standard Piston Ring Set Big Block 4.290" Bore +.040 Over

15 reviews
Part: 50203CP.040
Vehicle Specific
$101.27
Ships from manufacturer
Picture for manufacturer MAHLE

What's here for your Jeep Willys

  • Engine piston ring sets — multi-piece sets designed to match the bore specifications of Willys engines from this era
  • Individual engine piston rings — single rings available for targeted replacement
  • Engine mounts — cast iron and OE-replacement style mounts for securing the engine block

The widest selection here comes from MAHLE, Hastings, King Engine Bearings, and Crown Automotive. Other categories Jeep Willys owners shop for: Jeep Willys Steering Gear and Parts, Jeep Willys Steering Bearings and Jeep Willys Fuel Injectors and Injection Parts, or browse all Jeep Willys parts and accessories.