Reconditioned Renault Scénic 1.5 dCi Gearbox

Scénic 1.5 dCi: 5 engine codes K9K across two different gearboxes – get the right reference before you order

The Scénic's 1.5 dCi covers 2003 to 2016 under a single engine capacity, yet conceals five engine code variants — K9K722, K9K728, K9K729, K9K832, K9K836 — and not all of them take the same gearbox. Some versions are fitted with a 5-speed manual (JR5 family), others with a 6-speed manual (TL4 family). These two families are mechanically distinct: casing, final drive ratio, gearbox output. Engine capacity alone is not enough to tell them apart.

Engine code and model year: the two details you need to cross-reference

The switch from 5 to 6 speeds does not follow a single clear-cut date: it depends on both the engine code stamped on the block and the vehicle's model year. A K9K729 can therefore correspond to a different gearbox from a K9K832, even at the same quoted power output. Before placing any order, it is essential to note the full engine code — not just "K9K" — and cross-reference it with the vehicle's year to identify the correct TL4 or JR5 reference.

Key points to watch with this engine

TL4 gearboxes fitted to the 1.5 dCi are known for premature wear of the 3rd and 4th gear selector forks on high-mileage vehicles, often revealed by gear jumping or difficult cold engagement. JR5 units tend to show more failures at the primary shaft bearing. In both cases, the symptom alone is not enough to identify the family: only the engine code can do that.