Home/Caterpillar 3300 Series Parts/Caterpillar Piston Kit, PAI 311100, Pack of 1
Caterpillar · Models: 3306

Caterpillar Piston Kit, PAI 311100, Pack of 1

Commercial diesel pistons. Match the listed part and engine identifiers before ordering.
2-Year WarrantyPAI Industries
$130.58
In stock — confirm dispatch timing 29 available
Fitment details

Want us to check the fit? Share any details you have below. All fields are optional. Your request will be included with your order, and a specialist may contact you before fulfillment.

Secure Checkout Review Return Policy Warranty Details Ask About Same-Day Shipping
PAI Part #311100
JAK'S Part #JAKS-311100
Catalog ref311099 9N5403
Catalog ref311085 7N9805
Catalog ref311086 1S9543
Catalog refDANA CORPORATION/PRIVATE BRAND SALE 224-3251
Not sure it's the right fit? Call a specialist
(720) 445-6249
Talk to a tech or text a photo of your part tag — we'll confirm fitment before you buy
Included Components

What’s In This Kit

Browse 3 included components with current product details and availability.

Kit Membership

Used In These Kits

This part is included in 1 engine & overhaul kits — find yours below.

Complete The Rebuild

Suggested Additional Parts

Commonly sold with this product. These parts are sold separately.

  1. Caterpillar Piston Ring Set, PAI  (OEM 2W1709), Pack of 1
    305030Caterpillar Piston Ring Set, PAI (OEM 2W1709), Pack of 1 In stock
    $34.16View ›
  2. Cat / Caterpillar UPPER GASKET KIT
    331205Cat / Caterpillar UPPER GASKET KIT In stock
    $289.18View ›
  3. Caterpillar 3100 Exhaust Valve Insert, PAI  (OEM 1W2713), Pack of 6
    391910Caterpillar 3100 Exhaust Valve Insert, PAI (OEM 1W2713), Pack of 6 In stock
    $57.42View ›
  4. Caterpillar 3100 / C7 Valve Guide
    391990Caterpillar 3100 / C7 Valve Guide In stock
    $14.64View ›
  5. Cat / Caterpillar 3300 SERIES ROTOCOIL ASSEMBLY (Pack of 6)
    392026Cat / Caterpillar 3300 SERIES ROTOCOIL ASSEMBLY (Pack of 6) In stock
    $61.44View ›
Caterpillar Piston Kit, PAI 311100, Pack of 1
BrandPAI Industries
Part CategoryPistons, Rings & Rods
Sub-TypePiston
Engine MakeCaterpillar
Engine Model3306

Pack of 1.

PAI 311100 is a piston kit. Pack of 1 supplies one piston kit. PAI specifies a 17.5:1 compression ratio.

Compatible Engines

PAI lists Caterpillar 3300 Series; Caterpillar 3306 Engine. Confirm the complete required part number and application before ordering.

Manufacturer product cross-references
Dana Corporation/Private Brand Sale 224-3251

PAI listed components

Top-level included reference: PAI 311099, Piston: quantity 1. Component OEM reference: 9N5403.

Top-level included reference: PAI 311085, Piston Pin: quantity 1. Component OEM reference: 7N9805.

Top-level included reference: PAI 311086, Piston Pin Retainer: quantity 2. Component OEM reference: 1S9543.

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 3300 SERIES
  • CATERPILLAR 3306 ENGINE

OEM cross-references:

  • 311099 9N5403
  • 311085 7N9805
  • 311086 1S9543
  • DANA CORPORATION/PRIVATE BRAND SALE 224-3251

Warranty: 24 months