Parts for your 2004 Daihatsu Yrv-Oil seals

2004 Daihatsu YRV oil-seals — what they do, where they are, and when to replace them

Oil-seals are absolutely fitted to the 2004 Daihatsu YRV. Technical references including the Daihatsu YRV M200 Series Workshop Manual (K3-VE/K3-VET engines), the Daihatsu M200 Parts Catalogue (Engine and Transaxle sections), and Aisin automatic transmission service literature list multiple oil-seals used throughout the engine and driveline. These include the crankshaft front seal and rear main seal, camshaft seals, and transmission/differential output shaft seals. So yes—oil-seals are relevant on this model.

On a 2004 Daihatsu YRV, oil-seals keep engine oil and transmission fluid where they belong while allowing rotating shafts to spin freely. They prevent leaks at high-wear interfaces like the crank pulley, cam sprockets, and gearbox output shafts. When they harden, wear, or groove the shaft, you’ll see weeping under the bonnet, oil at the bellhousing, or drips around the driveshafts—sometimes with a hot, oily smell after a drive.

There’s no set kilometre interval for oil-seal replacement, they’re replaced on condition. That said, it’s smart to inspect them at every service. On the YRV’s K3-series engine (timing chain), a front crank seal can be refreshed during front-end engine work (crank pulley off). Cam seals are possible when the upper timing cover and cam area are open. The rear main seal is a bigger job—gearbox out—so many owners tackle it when a clutch or torque converter seal job is already on the cards. Transmission output shaft seals are typically replaced when there’s noticeable seepage around the driveshafts, or whenever the shafts are out for CV work.

Good shops will also check the crankcase ventilation system, excessive crankcase pressure can make new seals leak again. Using the correct grade engine oil and keeping change intervals sensible helps seals last longer. If a seal has been weeping for a while, watch engine and transmission fluid levels closely—low oil can cause bigger headaches than the seal itself.

• Common YRV oil-seals: front crank, rear main, camshaft, rocker cover gasket (not a seal, but often mistaken), and transaxle output shaft seals.
• Typical symptoms: damp timing cover, oil mist at crank pulley, oil at bellhousing, or ATF/gear oil around driveshafts.
• Handy tip: replace worn pulley/hub surfaces or use a repair sleeve if a groove has formed—new seal alone may not hold.

Technical sources: Daihatsu YRV M200 Series Workshop Manual (Engine K3-VE/K3-VET), Daihatsu M200 Parts Catalogue (Engine and Transaxle groups), and Aisin automatic transmission service documentation referencing output shaft and input shaft radial oil seals.

Popular questions about 2004 Daihatsu YRV oil-seals

Which oil-seals does a 2004 Daihatsu YRV have?
It typically has a front crankshaft seal, rear main (crank) seal, camshaft seals, and transmission/differential output shaft seals. Depending on variant, there may also be selector/input shaft seals in the gearbox. The rocker cover uses a gasket, not an oil-seal, but it’s a common source of leaks and often checked at the same time.

How can someone tell an oil-seal is failing on a YRV?
Look for fresh oil around the crank pulley and timing cover, oil tracking down the back of the engine near the bellhousing, or wet spots where the driveshafts exit the transmission. A burning oil smell after a run or small drops on the driveway are also clues. Clean the area, drive a few days, then re-check to pinpoint the source.

When should oil-seals be replaced on the YRV?
Replace on condition—there’s no fixed schedule. It’s efficient to do them during related work: front crank/cam seals during front-end engine or timing cover jobs, rear main during clutch or transmission removal, and output shaft seals when driveshafts are out. If leaks are minor, monitor levels closely, if they worsen, book it in sooner to avoid collateral damage.