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Manufacturer part-number reference

Caterpillar 129-4181 Rocker arm valve bridge

Source verified

Review the available identification and technical context for Caterpillar 129-4181, then request current price, availability, lead time and worldwide delivery for your required quantity and destination.

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Within 4 business hoursTypical first response target
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International shipping includedWhen confirmed in the written quote
Door-to-door coordinationCustoms handling reviewed per shipment
Caterpillar 129-4181 representative industrial RFQ image

Product reference summary

Caterpillar 129-4181

Brand
Caterpillar
Part number
129-4181
Catalog status
source verified
Component context
Engine components
Product family
Cylinder head components
Technical documentation
Source recorded
Last source review
2026-08-17

Primary evidence: manufacturer product page

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RFQ for Caterpillar 129-4181

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Technical reference overview

Known technical context

Cat 129-4181 is a rocker arm valve bridge used in an engine valve train to help the rocker mechanism operate intake and exhaust valves. Only fields supported by the current technical profile are shown below. Confirm nameplate data and the machine application when requesting a replacement.

Product Type
Rocker arm valve bridge
Product Family
Cylinder head components
Application Area
Engine valve train
Dimensions
Length 4.0 in; listed height 0.9 in
Common Industries
Power generation; marine; mining; oil and gas; industrial engines; heavy equipment
Manufacturer-Listed Application Families
Manufacturer-listed applications include selected Cat 3508, 3512, 3516, G3512, G3516, and G3520 engine families; confirm the exact equipment serial number before purchase.
Fitment review note

Confirm the equipment serial number and current configuration with the manufacturer or Cat dealer. The manufacturer states that a fit indicator cannot guarantee compatibility for every configuration.

PartsGo reference intelligence

Identity, provenance, and replacement-review record

Download technical RFQ brief
Canonical manufacturer
Caterpillar
Exact manufacturer reference
129-4181
Reference structure
2 identifier segments
Character pattern
Numeric MPN
Separators preserved
-
Catalog classification
Engine components
Family context
Cylinder head components
Technical profile
verified
Datasheet record
Recorded
Manufacturer page
Recorded
Technical field alignment
Reviewed before quotation
Last catalog update
2026-07-03

Reference-specific review protocol

  1. Match the complete “129-4181” reference and preserve every suffix, separator, revision code and rating code.
  2. Confirm that the nameplate manufacturer is Caterpillar; similar references from another maker are not treated as identical.
  3. Compare electrical, mechanical, pressure, connection, firmware, and mounting fields that apply to the component class.
  4. Record machine model, operating function, failure mode, and acceptable replacement constraints before alternative review.
  5. Commercial availability is checked against the requested quantity, destination, condition, and delivery target.

A verified supplier review is normally started the same business day, with a typical first-response target of four business hours. Shipping, customs handling, price, condition, and lead time are confirmed in the written quotation.

Industrial sourcing context

Identify the correct reference before commercial review

Part numbers can vary by revision, electrical rating, firmware, connection, mounting, regional suffix, or machine generation. For 129-4181, include the complete label and preserve every suffix or separator visible on the original component.

If this is a replacement request, describe the equipment function and the failure or maintenance objective. That evidence helps distinguish an exact replacement from an alternative that requires engineering approval.

Evidence to include

  • Clear front and nameplate photos
  • Complete part number, revision, and firmware where shown
  • Voltage, current, pressure, signal, or connection details
  • Machine maker, model, and application
  • Quantity, U.S. delivery state or ZIP code, and target delivery date

Manufacturer catalog

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Product FAQ

Caterpillar 129-4181 RFQ questions

What is the product context for Caterpillar 129-4181?

Caterpillar 129-4181 is recorded in the Rocker arm valve bridge product context. Include the complete MPN, ratings and machine application for exact-reference review.

Is technical documentation available for Caterpillar 129-4181?

A technical source is recorded for Caterpillar 129-4181 and can be used during identification and quotation review.

How is a replacement for Caterpillar 129-4181 reviewed?

Replacement review compares the original specification, machine model, revision, application and required operating constraints.

How do I request price and availability for Caterpillar 129-4181?

Send the exact 129-4181 MPN, quantity, destination and target delivery date. PartsGo confirms price, availability, condition, lead time and delivery terms in the written quotation.

Which details support an RFQ for 129-4181?

Provide the complete MPN, quantity, destination, nameplate photos, machine model, applicable ratings and alternative preference.