FACTORY COMPARISON / FIRST ORDER
Compare quotes from up to 3 factories
FREE basic specification and sourcing-requirements review
Eligible first orders may receive up to 3%
Eligibility applies to qualified business buyers and is confirmed after we review your product, quantity, destination, and sourcing requirements. Final savings depend on supplier confirmation, product type and order value.
Specification Review
Distinguish requested specifications from verified supplier declarations. Cylinder head casting number lookup filters candidates; combustion chamber, valve layout and interface dimensions still need confirmation against drawings or measured references.
Use casting numbers as a first screen, then force a dimensional and contents review. This page does not claim laboratory ownership or completed audits; it lists checks buyers should demand before sample or production approval.
State engine code, casting number, combustion chamber notes, valve layout, deck height or interface dimensions with units, bolt pattern or stud count, and bare-versus-assembled preference. Include OE reference for identification only when it helps locate the family.
Ask the supplier to identify casting revision, machining revision, material grade or surface-finish notes when claimed, and any deviations from the buyer’s listed chamber or valve geometry. Require a written contents list for valves, springs, retainers, studs and bolts.
Match drawings, pressure-test records, sample approval sheets and casting-batch files to the actual head and legal entity offering the quote—not a catalog family page alone. New versus remanufactured conditions need separate declarations and any core-charge terms.
Record missing casting photos, unverified chamber volumes, incomplete valve contents or open injector-seat questions before approving a sample. Sample acceptance does not auto-approve later lots; define which checks repeat for batch consistency.
After the review, compare quotes only when assembly scope, packing unit, Incoterms and destination ZIP sit on the same baseline. Optional budget and supplier preference remain buyer tradeoffs, not verified supplier ratings.
Include quantity, order unit and destination with the cylinder head casting number lookup notes so suppliers can answer the same dimensional checklist.