How to prepare the pistons and new ring sets for side clearance check, end gap measurement, and engine assembly on Subaru Impreza?

When preparing the pistons and new ring sets, make sure they are matched in order to allow checking of their side clearance, end gap measurement and engine assembly. Before putting the rings on it, ensure that the piston ring side clearance is right by inserting some new rings into each groove and employing a feeler gauge to test the spaces between them at various points around every groove. Distinct clearances exist for different rings; compression rings ordinarily have a clearance of about 0.0015 to 0.004 inches. Then, confirm that the ring end gaps fall within specifications by slightly dragging feeler gauges through the ring ends. The standard ring gap (compression ring) is 0.010" - 0.020". Smaller gaps can be adjusted by careful filing of ring ends. Avoid extremely large gaps over 0.040". Subsequently, mount the rings correctly on each piston starting with oil control ring as it has three parts namely spacer/expander, upper side rail and lower side rail which must be carefully inserted into their respective grooves without using a piston ring installation tool.Then make sure that both upper and lower rails can rotate smoothly.Putting number two(middle)ring in place there should be an identification mark pointing up while number one(top)ring should also face upwards with its mark repeating these steps for remaining pistons ensuring accurate installation for each.

Genuine Subaru Impreza Piston Ring Set

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48 Piston Ring Sets found

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Subaru Impreza Piston Ring Set
Part Number: 12033AB340
$158.31 MSRP: $231.45
You Save: $73.14 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Manufacturer Note: STD
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2004-2011 Subaru Impreza | 2.5 GT, 2.5i, 25i, Outback, Outback Sport, RS, STI, STI Limited, WRX, WRX Sport, WRX TR, WRXSS | 2.5L H4, 2.5L H4 Turbo
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Subaru Impreza Piston Ring Set
Part Number: 12033AC000
$143.89 MSRP: $210.37
You Save: $66.48 (32%)
Ships in 1-2 Business Days
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Product Specifications
- Manufacturer Note: STD
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2008-2011 Subaru Impreza | STI, STI Special Edition, STI Sport | 2.5L H4 Turbo
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Subaru Impreza Piston Ring Set Std
Part Number: 12033AA210
$160.87 MSRP: $235.18
You Save: $74.31 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Piston Ring Set; Piston Rings, Ring Set
- Manufacturer Note: STD
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1995-1998 Subaru Impreza | Brighton, L, LX, Outback | 2.2L H4, 2.2L H4 (New EVAPO)
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Subaru Impreza Ring Set Piston
Part Number: 12033AC360
$131.78 MSRP: $190.98
You Save: $59.20 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Piston Ring Set
- Manufacturer Note: STD
- Replaces: 12033AC210
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2012-2014 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
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Subaru Impreza Piston Ring Set
Part Number: 12033AC210
$131.78 MSRP: $190.98
You Save: $59.20 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Manufacturer Note: STD
- Replaced by: 12033AC360
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2012-2013 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
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Subaru Impreza Ring Set Piston
Part Number: 12033AC870
$138.51 MSRP: $202.50
You Save: $63.99 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Piston Ring Set
- Manufacturer Note: STD
- Replaced by: 12033AD140
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2015 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
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Subaru Impreza Ring Set Piston
Part Number: 12033AC380
$143.70 MSRP: $210.08
You Save: $66.38 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston Ring Set
- Manufacturer Note: OS 0.50
- Replaced by: 12033AD190
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2013-2014 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
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Subaru Impreza Piston Ring Set
Part Number: 12033AB240
$175.45 MSRP: $256.50
You Save: $81.05 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Manufacturer Note: OS,0.50
- Replaced by: 12033AB780
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2002-2003 Subaru Impreza | WRX | 2.0L H4 Turbo
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Subaru Impreza Ring Set-Piston
Part Number: 12033AD560
$123.97 MSRP: $179.67
You Save: $55.70 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Manufacturer Note: STD
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2020-2021 Subaru Impreza | Base, Premium, Sport
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Subaru Impreza Ring Set-Piston
Part Number: 12033AD570
$123.97 MSRP: $179.67
You Save: $55.70 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Manufacturer Note: OS 0.25
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2020-2021 Subaru Impreza | Base, Premium, Sport
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Subaru Impreza Ring Set-Piston
Part Number: 12033AD580
$123.97 MSRP: $179.67
You Save: $55.70 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Manufacturer Note: OS 0.50
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2020-2021 Subaru Impreza | Base, Premium, Sport
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Subaru Impreza Piston Ring Set
Part Number: 12033AD150
$138.51 MSRP: $202.50
You Save: $63.99 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Manufacturer Note: OS 0.25
- Replaces: 12033AD090, 12033AD060
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2016 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
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Subaru Impreza Piston Ring Set
Part Number: 12033AD160
$138.51 MSRP: $202.50
You Save: $63.99 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Manufacturer Note: OS 0.50
- Replaces: 12033AD070, 12033AD100
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2016 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
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Subaru Impreza Ring Set Piston
Part Number: 12033AC880
$136.71 MSRP: $198.13
You Save: $61.42 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston Ring Set
- Manufacturer Note: OS 0.25
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2015 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
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Subaru Impreza Ring Set Piston
Part Number: 12033AC890
$136.71 MSRP: $198.13
You Save: $61.42 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston Ring Set
- Manufacturer Note: OS 0.50
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2015 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
View related parts
Subaru Impreza Piston Ring Set
Part Number: 12033AC230
$143.70 MSRP: $210.08
You Save: $66.38 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Manufacturer Note: OS 0.50
- Replaced by: 12033AD190
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2012-2013 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
View related parts
Subaru Impreza Ring Set Piston
Part Number: 12033AC370
$143.70 MSRP: $210.08
You Save: $66.38 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Piston Ring Set
- Manufacturer Note: OS 0.25
- Replaced by: 12033AD180
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2013-2014 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
View related parts
Subaru Impreza Ring Set-Piston
Part Number: 12033AB760
$175.45 MSRP: $256.50
You Save: $81.05 (32%)
Product Specifications
- Other Name: Piston Ring Set
- Manufacturer Note: STD
- Replaces: 12033AB220
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2002-2005 Subaru Impreza | WRX | 2.0L H4 Turbo
View related parts
Subaru Impreza Piston Ring Set
Part Number: 12033AD140
$138.51 MSRP: $202.50
You Save: $63.99 (32%)
Product Specifications
- Manufacturer Note: STD
- Replaces: 12033AD080, 12033AC870, 12033AD050
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2015-2016 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
View related parts
Subaru Impreza Piston Ring Set
Part Number: 12033AD260
$143.70 MSRP: $210.08
You Save: $66.38 (32%)
Product Specifications
- Manufacturer Note: STD
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2017-2021 Subaru Impreza | Base, Limited, Premium, Sport

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Subaru Impreza Piston Ring Set

Our website stands as the go-to online destination for OEM Subaru Impreza Piston Ring Set. With complete lines of genuine Subaru Impreza Piston Ring Set available at unbeatable market prices, we ensure top quality, reliability, and durability. Each part comes backed by the manufacturer's warranty, reinforcing your trust in our offerings.

Subaru Impreza Piston Ring Set Parts Questions & Experts Answers

Piston Ring Set
12033AB360
Q: How to prepare the pistons and new ring sets for side clearance check, end gap measurement, and engine assembly on Subaru Impreza?
A: When preparing the Pistons and new ring sets, make sure they are matched in order to allow checking of their side clearance, end gap measurement and engine assembly. Before putting the rings on it, ensure that the piston ring side clearance is right by inserting some new rings into each groove and employing a feeler gauge to test the spaces between them at various points around every groove. Distinct clearances exist for different rings; compression rings ordinarily have a clearance of about 0.0015 to 0.004 inches. Then, confirm that the ring end gaps fall within specifications by slightly dragging feeler gauges through the ring ends. The standard ring gap (compression ring) is 0.010" - 0.020". Smaller gaps can be adjusted by careful filing of ring ends. Avoid extremely large gaps over 0.040". Subsequently, mount the rings correctly on each piston starting with oil control ring as it has three parts namely spacer/expander, upper side rail and lower side rail which must be carefully inserted into their respective grooves without using a piston ring installation tool.Then make sure that both upper and lower rails can rotate smoothly.Putting number two(middle)ring in place there should be an identification mark pointing up while number one(top)ring should also face upwards with its mark repeating these steps for remaining pistons ensuring accurate installation for each.