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Buyer’s guide · Cylinder liners · Caterpillar engine parts
CAT 3304/3306 Cylinder Liner Buyer’s Guide: Checking 110-5800 and 2P8889
A cylinder liner that looks right in a photo can still be wrong for the engine on your bench. This guide explains how buyers can use the references 110-5800, 1105800 and 2P8889 as useful search clues—without treating a number alone as proof of fitment.
Why CAT 3304/3306 cylinder liner verification matters
The liner is part of the combustion-sealing and heat-transfer system. Its outside profile must suit the block, its upper area must work with the head-gasket arrangement, and its bore must match the intended piston and ring package. A mismatch can create installation problems even when the supplier and buyer are both discussing a “3306 liner.”
Engine family names are a starting point, not a complete parts specification. Engines may have different arrangements, applications, production revisions or previous repairs. A machine can also contain a replacement engine that differs from the model originally installed. For that reason, professional identification begins with the engine itself.
How to use 110-5800, 1105800 and 2P8889
Buyers searching for a CAT 3304 or 3306 cylinder liner often encounter formatted and unformatted references. For example, 110-5800 may appear as 1105800 when punctuation is removed. This can help when searching catalogs, old invoices and supplier databases, but formatting similarity does not prove that every listing describes the same specification.
The reference 2P8889 also appears in searches connected with CAT 3304/3306 cylinder sleeves. Treat it as a cross-reference to investigate, not as an automatic substitute. Cross-references can reflect supersession, aftermarket catalog mapping, a particular arrangement or simply an inaccurate seller listing. The safest process is to compare the proposed part against a current parts source and the engine data.
| Reference seen | What it can tell you | What it cannot confirm alone |
|---|---|---|
| 110-5800 | A specific reference to search in catalogs and supplier systems | Exact fitment for every 3304/3306 arrangement |
| 1105800 | Usually the punctuation-free search form of 110-5800 | That the listing data and dimensions are correct |
| 2P8889 | A reference worth checking against the engine and current catalog | Automatic interchangeability with another number |
You can review the relevant IZUMI ORIGINAL CAT 3304/3306 cylinder liner page as a product lead, then send complete engine information for final confirmation.
Information to collect before requesting a quote
A strong request for quotation reduces repeated messages and helps the supplier identify conflicts before parts leave the warehouse. Gather the following information whenever possible:
- Engine model from the engine plate. Record it exactly rather than relying only on the machine model.
- Engine serial number. A clear photograph is better than a number typed from memory.
- Arrangement or configuration number. Include it when the plate or service records provide one.
- Old liner markings. Photograph every readable number, logo and code.
- Machine make, model and application. State whether the engine is used in an excavator, loader, generator, industrial unit or another application.
- Required quantity. Say whether you need one service replacement, a complete engine set or stock for repeated repairs.
- Related overhaul parts. If pistons, rings, seals or bearings are also required, identify them in the same request so the package can be checked as a system.
If the plate is missing or unreadable, tell the supplier immediately. Provide photos of the complete engine, injection equipment, block casting areas, old parts and machine plate. These clues may help, but identification can take longer and may still require a qualified technician or an authoritative parts catalog.
Inspect the old liner and engine before ordering
1. Keep removed parts organized
Mark the cylinder position of each removed liner and piston assembly. Do not mix parts before the technician has recorded the wear pattern. The pattern can reveal local cooling, lubrication, sealing or alignment issues that a new liner alone will not correct.
2. Clean carefully before measuring
Carbon, corrosion and sealing residue can distort measurements. Cleaning must not damage reference surfaces. Have a trained engine rebuilder measure the relevant liner and block features using calibrated tools and the correct service procedure.
3. Inspect the block seating and sealing areas
Look for corrosion, erosion, cracks, fretting and damaged counterbores or sealing surfaces. A good replacement part cannot compensate for a damaged block. If the block requires machining, the final parts decision should be made together with the machine shop.
4. Check the complete piston-liner combination
Do not evaluate the liner in isolation when the engine is being overhauled. Confirm the intended piston, ring set, seals and head-gasket arrangement. Mixing components from different references can create clearance or sealing risks.
5. Record evidence
Create a simple inspection record with plate photos, old-part numbers, measurements, failure observations and the technician’s recommendation. This record is useful for both purchasing and future maintenance.
Common ordering mistakes—and how to avoid them
| Mistake | Risk | Better action |
|---|---|---|
| Ordering by “3306” alone | Engine variations are ignored | Send serial and arrangement information |
| Assuming 110-5800 and 2P8889 are interchangeable | Cross-reference may not fit the exact engine | Request documented catalog verification |
| Using a machine model instead of the engine plate | The machine may contain a replacement engine | Identify the installed engine directly |
| Buying one liner without diagnosing the failure | The same cooling, sealing or block problem may damage the new part | Find and correct the root cause first |
| Comparing only price | Kit contents, material, inspection and support may differ | Compare the complete specification and supplier response |
Questions to ask a cylinder liner supplier
A dependable supplier should be willing to explain what information is needed for identification. Use these questions before confirming the order:
- Which engine information did you use to confirm this liner?
- Is the proposed number current, superseded or an aftermarket cross-reference?
- Can you provide actual product photos and readable packaging identification?
- Which seals or related components are included, and which must be ordered separately?
- What inspection is performed before shipment?
- What is the process if the supplied part does not match the verified information?
- Can all related overhaul parts be checked against the same engine data?
Explore the broader cylinder liner range and parts for Caterpillar applications to organize your request, but always complete the identification process before installation.
Installation and quality-control reminders
Installation should follow the applicable engine service information and be performed by a qualified technician. The technician should verify the block condition, liner seating, sealing components and required measurements. Reusing damaged seals, forcing a liner into place or skipping final dimensional checks can turn a correct purchase into an early failure.
After assembly, the workshop should complete the specified pressure, lubrication, cooling and operating checks. Any abnormal coolant loss, pressure, temperature, smoke or noise requires investigation before the engine returns to full load.
A practical RFQ format for faster verification
Put all identification data in one message instead of sending a part number first and the engine details later. A useful subject line is “CAT 3306 cylinder liner inquiry—engine serial available.” In the message, list the installed engine model, serial number, arrangement information, old liner reference, machine application, quantity and destination country. Attach original-resolution photographs with simple file names such as engine-plate.jpg, old-liner-marking.jpg and block-seat.jpg.
Ask the supplier to reply with the proposed reference, included components, confirmation basis, available quantity, lead time and packaging details. If the supplier recommends 110-5800, 2P8889 or another reference, request an explanation of how it was matched. Keep that written confirmation with the quotation and inspection record.
For a complete overhaul, send one consolidated parts list. This allows the piston, ring, liner, gasket and bearing requests to be reviewed together. It also makes quote comparison more accurate: two offers may have very different contents even when both are described as an overhaul package. Clear documentation saves time at the purchasing stage and gives the workshop better information when the shipment arrives.
Frequently asked questions
Is 1105800 the same written reference as 110-5800?
It is commonly used as the punctuation-free search form. However, confirm the actual listing, catalog record and engine applicability rather than relying on text formatting alone.
Can I order a CAT 3306 cylinder liner with only the engine model?
That is not recommended. Send the engine serial number, arrangement or configuration data when available, old-part markings and clear photos. These details reduce the risk of selecting a liner for a different engine variation.
Does a cross-reference guarantee interchangeability?
No. A cross-reference is a useful lead for verification. The supplier should still confirm the number against the engine and current parts information.
Should I replace one liner or a complete set?
The decision depends on the failure, wear condition, service objective and the technician’s inspection. Record the condition of all cylinders before ordering.
What photos should I send?
Send the engine plate, full engine, old liner from several angles, all readable markings, block seating area and any visible failure. Avoid cropped or compressed images that hide identification details.
Need help checking a CAT 3304/3306 liner request?
Send the engine model, serial number, arrangement information, old reference, clear photos and required quantity through the IZUMI ORIGINAL contact page. The more complete the identification data, the faster a supplier can evaluate the request.
