Second Hand Mercedes-Benz A-Class Crankshaft

Yes, every variant of the Mercedes-Benz A-Class has a crankshaft — it is a fundamental rotating component inside every internal combustion engine, converting the up-and-down motion of the pistons into rotational power. The A-Class has been sold in the UK across four generations (W168, 1997–2004; W169, 2004–2012; W176, 2012–2018 with a facelift around 2015; and W177, 2018–present), and all of them use petrol or diesel engines that contain a crankshaft. Even hybrid A-Class variants retain a conventional combustion engine with a crankshaft.

The engine code is the single most important detail when sourcing a used A-Class crankshaft, because crankshaft dimensions, stroke, and bearing sizes are all determined by the engine family, not the model year or trim level. You can find the engine code on your V5C registration document or by running a VIN check. Give the engine code directly to the breaker, as a crankshaft listed for the same displacement can vary significantly between engine generations — for example, the A180 badge has been used across entirely different engine families over the years. Never rely on engine size or badge alone.

The W176 and W177 generations are a genuine boundary here, and while some engine families carried over between them, the engines were updated and in many cases are not the same units — meaning crankshafts from a W176 may not be directly interchangeable with a W177 even if the badge looks identical. Your engine code is essential: if both cars share exactly the same engine code, fitment is much more likely, but you should still confirm with the breaker against your registration before purchasing. Do not assume compatibility based on model badge, displacement, or fuel type alone.

Yes, it matters significantly — petrol and diesel engines are entirely different units with different bore, stroke, and crankshaft designs, so a crankshaft from a diesel A-Class will not fit a petrol one and vice versa. Beyond fuel type, the specific engine code within each fuel type also matters, as Mercedes-Benz has used multiple different petrol and diesel engines across A-Class generations. Always supply the breaker with both your fuel type and your engine code to get an accurate match.

Trim level has no bearing on crankshaft compatibility whatsoever — SE, Sport, AMG Line, and other trim designations on the A-Class refer to cosmetic and equipment differences such as alloy wheel designs, interior finishes, and body styling kits. What determines the correct crankshaft is entirely the engine code fitted to your specific car, which you can verify on your V5C or via a VIN check. Two A-Class cars in different trims but with the same engine code will use the same crankshaft.

The W176 facelift in 2015 brought some engine and ancillary changes alongside the cosmetic updates, so while both cars sit within the same generation, you should not assume the crankshaft is identical across that boundary without checking the engine codes of both donor and recipient cars. If the engine codes match exactly, fitment is considerably more likely, but confirm this with the breaker against your registration as mid-production changes can affect components in ways that are not always publicly documented. A good breaker will cross-reference your registration to check for any relevant production changes.