3500-series (3512/3516) engine maintenance
For 3500-series (3512/3516) engine maintenance, the engine type, cylinder number and serial number narrow the request faster than a part name alone.
Marine engine brands
Caterpillar marine parts sourcing for vessel and industrial RFQs
Send a part number, model, serial number, drawing, photo or old reference for a Caterpillar / CAT part, and we'll check it before quoting.
Marine engine brands
How we handle Caterpillar / CAT requests
Caterpillar marine RFQs span the 3500-series (3512, 3512C, 3512E, 3516C, 3516E) used on tugs and workboats, the C-series (C18, C32, C32B) for smaller commercial and high-speed craft, and the C280 series (6/8/12/16-cylinder) for larger propulsion and auxiliary power. Engine arrangement number and serial number matter more than the base model, since ratings and revisions vary within each family.
Customers can send part numbers, maker references, equipment model data, serial numbers, nameplates, photos, drawings, old offers or previous supply documents. We review the information before quoting so the request is handled as a technical procurement task rather than a generic product search.
Brand names on this page are used only to identify equipment, models, parts and buyer search references.
Parts and equipment we can review
Caterpillar / CAT RFQ scope
Use this page when your purchasing or engineering team needs review by part number, model, serial number, drawing, photo or old commercial reference.
C18 / C32 / C32B auxiliary and propulsion systems
We check C18 / C32 / C32B auxiliary and propulsion systems against maker data, dimensions and delivery need before sourcing.
C280 series large engine parts
For C280 series large engine parts, the engine type, cylinder number and serial number narrow the request faster than a part name alone.
filter and lubrication service
Filter and lubrication service are matched on element dimensions, micron rating and thread/connection size rather than brand name alone.
cooling system components
For cooling system components, a part number, maker reference or old order line is usually enough to start the check.
fuel injection equipment
We check fuel injection equipment against maker data, dimensions and delivery need before sourcing.
Common parts
Typical items buyers ask us to check
filters
gaskets
seals
temperature sensors
pressure sensors
fuel injection parts
water pump parts
oil pump parts
bearings
pistons
rings
repair kits
RFQ examples
Common search and inquiry examples
| Example request | Helpful details to send |
|---|---|
| CAT 3512C or 3516C filter element requests by part number | Part number, maker, model, serial number, quantity, photos or drawings, delivery location and urgency. |
| C32 or C32B marine engine sensor RFQs with serial number | Part number, maker, model, serial number, quantity, photos or drawings, delivery location and urgency. |
| C280 series water pump repair kits by engine arrangement | Part number, maker, model, serial number, quantity, photos or drawings, delivery location and urgency. |
| fuel injection parts from old invoice references | Part number, maker, model, serial number, quantity, photos or drawings, delivery location and urgency. |
How to send a useful Caterpillar / CAT RFQ
Attach the clearest technical information available. A single photo of a nameplate, an old offer line or a marked drawing can prevent delays when there are similar models, revisions or connection types.
If the item is obsolete or hard to identify, include dimensions, application notes and any alternative references already checked by your engineering team. We can review the request and reply by email with the next steps.
Independent sourcing note
Passat Gear Trade is an independent sourcing company. Brand names are used for identification purposes only. No formal brand relationship is claimed unless confirmed in writing for a specific supply.
Related pages
Continue by system, component or related maker
Send a spare parts RFQ for Caterpillar / CAT
Include part numbers, maker references, equipment model, serial number, quantity, photos or drawings, delivery location and urgency.