Caterpillar Piston Ring Set, PAI 305055, Pack of 1
What’s In This Kit
Browse 3 included components with current product details and availability.
Used In These Kits
This part is included in 53 engine & overhaul kits — find yours below.
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312601-001Cat / Caterpillar 3126 SERIES ENGINE KIT In stock -
312601-017ENGINE KIT In stock -
312601-021ENGINE KIT In stock -
312601-022ENGINE KIT In stock -
312601-026ENGINE KIT In stock -
312601-027ENGINE KIT In stock -
312601-049ENGINE KIT In stock -
312601-054ENGINE KIT In stock -
312601-057OVERHAUL ENGINE KIT In stock -
312602-001ENGINE KIT In stock -
312603-001ENGINE KIT Confirm lead time -
312604-001ENGINE KIT In stock - 312605-001ENGINE KIT View ›
- 312605-006ENGINE KIT View ›
- 312605-011OVERHAUL ENGINE KIT View ›
- 312605-017ENGINE KIT View ›
- 312605-022ENGINE KIT View ›
- 312605-049ENGINE KIT View ›
- 312605-050ENGINE KIT View ›
- 312605-054ENGINE KIT View ›
- 312605-059ENGINE KIT View ›
- C70101-001ENGINE KIT View ›
- C70101-017ENGINE KIT View ›
- C70101-018ENGINE KIT (C7) View ›
- C70101-022ENGINE KIT View ›
- C70101-027ENGINE KIT View ›
- C70101-049ENGINE KIT View ›
- C70101-050ENGINE KIT View ›
- C70101-054ENGINEKIT View ›
- C70101-057ENGINEKIT View ›
- C70101-059ENGINEKIT View ›
- C70101-081ENGINE KIT View ›
- C70101-091ENGINE KIT View ›
- C70101-097ENGINE KIT View ›
- C70101-113ENGINE KIT View ›
- C70101-118ENGINE KIT View ›
- C70102-001ENGINE KIT View ›
- C70102-017ENGINE KIT View ›
- C70102-018ENGINE KIT View ›
- C70102-022ENGINE KIT View ›
- C70102-027ENGINEKIT View ›
- C70102-033ENGINE KIT View ›
- C70102-049ENGINE KIT View ›
- C70102-054ENGINE KIT View ›
- C70102-055ENGINE KIT View ›
- C70102-058ENGINE KIT View ›
- C70102-059ENGINE KIT View ›
- C70102-065ENGINE KIT View ›
- C70102-081ENGINE KIT View ›
- C70102-091ENGINEKIT View ›
- C70102-097ENGINE KIT View ›
- C70102-113ENGINE KIT View ›
- C70102-118ENGINE KIT View ›
- No kits match that search.
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
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370055Cat / Caterpillar CONNECTING ROD BEARING In stock -
370100Cat / Caterpillar MAIN BEARING SET In stock -
331503Cat / Caterpillar UPPER GASKET KIT In stock -
331264Cat Cylinder Head Gasket, PAI (OEM 133-4995) In stock -
321348Caterpillar C7 Fuel Injector O-Ring Kit, PAI (OEM 2974841), Pack of 1 In stock
| Brand | PAI Industries |
| Engine Make | Caterpillar |
| Engine Model | 3126 · C7 |
Pack of 1.
PAI 305055 is a piston ring set. Pack of 1 supplies one ring set. PAI lists a 110.000 mm bore.
Compatible Engines
PAI lists Caterpillar 3100 Series; Caterpillar C7 Engine; Caterpillar 3126 Series. Confirm the complete required part number and application before ordering.
PAI listed components
Top-level included reference: PAI 305056, Compression Piston Ring: quantity 1. Component OEM reference: 1979386.
Top-level included reference: PAI 305057, Intermediate Piston Ring: quantity 1. Component OEM reference: 1979277.
Top-level included reference: PAI 305058, Oil Control Piston Ring: quantity 1. Component OEM reference: 1979354.
Nested rows describe parts within their named sub-kit and do not add extra assemblies. Component references are not whole-kit OEM numbers.
Compare the complete part number and required specification before ordering.
Fits:
- CATERPILLAR 3100 SERIES
- CATERPILLAR C7 ENGINE
- CATERPILLAR 3126 SERIES
OEM cross-references:
- 305056 1979386
- 305057 1979277
- 305058 1979354
- 1274 G
Warranty: 24 months
These catalog references may identify this part or components in an assembly. A listed number alone does not confirm whole-assembly interchange or vehicle fitment. Confirm the required part before ordering.
| Number |
|---|
| 305056 1979386 |
| 305057 1979277 |
| 305058 1979354 |
| 1274 G |
| PAI 305055 |
No cross-reference numbers match that search.
Discovery models are listed below. Confirm the complete application and any ESN/CPL or size restrictions before ordering.
Most PAI parts carry a 2-year unlimited-mileage PAI warranty — 3 years on the High Performance tier, 1 year on Excel by PAI. See Warranty & Returns for full coverage terms, or call a specialist to confirm the exact coverage on this part.
PAI published warranty tiers: High Performance — 3-Year · Genuine PAI — 2-Year · Excel — 1-Year, unlimited mileage. The badge beside the price shows this product's recorded term; when no badge is shown, confirm coverage with a specialist.




















