Start with whether the job calls for a crankshaft assembly, a connecting rod kit or a separate component. Match the exact engine and any stated dimensions, then check what is supplied. A rod kit and a crankshaft assembly should not be treated as the same purchase.
Read the buying guide and FAQs
Use crankshafts and parts for crankshaft listings and connecting rods and parts for rod-related components. Compare the description and contents with your engine builder's parts list before deciding between an assembly and separate parts.
Check the full model, year, engine capacity and application notes. If stroke, rod dimensions or other measurements are given, compare them with the specification required for your build. An engine that has been replaced or modified needs checking against the parts actually fitted, not just the vehicle's original details.
Do not assume it does. Read the supplied-parts list for the exact reference and confirm whether the listing is a rod kit, an assembly or an individual component. Check any pins, bearings, washers or other parts separately if the contents are not explicit.
Check the exact listing rather than inferring this from an assembly photograph or title. If required parts are separate, browse engine bearings and gaskets and seals, matching the position and application of each item.
No. Use the exact engine application and part reference, plus any stated dimensions or variant notes. A shared capacity or similar appearance does not establish that crankshaft and rod specifications are the same.
Ask your engine builder to confirm that the proposed kit suits the crankshaft and the planned work, including any specialist assembly requirements. For piston-side components, use pistons and rings and check what is included with the chosen piston or kit.
Compare the complete model, year and part number before choosing a part.