How should the ring end gaps be checked before installing new piston rings on 2003 Mazda Protege?

Verify groove clearance and check piston ring end gaps with matched piston/cylinder sets. Square each ring, position and measure gap with a feeler gauge for slight drag. If incorrect, confirm correct rings; do not file ends. Install oil ring components, then middle and top rings with marks up.

Genuine 2003 Mazda Protege Piston Ring

Piston Ring Set

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2003 Mazda Protege Piston Ring Set Part Number: FSY2-11-SC0A
$43.70 MSRP: $57.36
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Product Specifications
- Other Name: Ring Set, Piston
- Item Weight: 0.60 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: FSY2-11-SC0A
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following 2003 Mazda Protege Submodels:
- DX, ES, LX, Mazdaspeed, MP3 | 4 Cyl 2.0 L GAS

2003 Mazda Protege Piston Ring Parts and Q&A

Q: How should the ring end gaps be checked before installing new piston rings on 2003 Mazda Protege?
A: Verify groove clearance and check piston ring end gaps with matched piston/cylinder sets. Square each ring, position and measure gap with a feeler gauge for slight drag. If incorrect, confirm correct rings; do not file ends. Install oil ring components, then middle and top rings with marks up.