Parts for your 2008 Honda Stream-Oil seals

2008 Honda Stream oil seals — what they do and when to sort them

Oil seals are absolutely relevant and fitted to the 2008 Honda Stream. Honda’s factory literature — including the Honda Stream 2006–2014 Service Manual (Engine, Lubrication, and Transaxle sections) and the Honda Electronic Parts Catalogue for RN6–RN9 models — lists multiple oil seals for the R18A/R20A engines and their transmissions. These include the front crankshaft seal behind the crank pulley, rear main seal at the flywheel/torque converter, camshaft oil seals, and transmission/differential (driveshaft) oil seals. That’s straight from Honda’s technical documentation and parts listings.

On the 2008 Stream, oil seals keep engine and gearbox oil where it belongs while keeping dust and moisture out. They ride on rotating shafts — like the crank and cams — using a precision rubber lip and spring to maintain a tight seal. When they harden or wear, they can weep oil, which can mist the undertray, leave spots on the driveway, or in worse cases contaminate the clutch or the timing area.

Tell-tale signs include fresh oil around the crank pulley, oily residue at the bellhousing, or oil collecting where the driveshafts enter the transmission. A burnt-oil smell on the exhaust can also point to a front seal or cam seal leak under the bonnet.

• Inspection: At each service, check the front of the engine, bellhousing join, and driveshaft exits from the trans for wetness. Keep an eye on the sump area too, so a gasket leak isn’t mistaken for a seal.
• When to replace: Seals aren’t a fixed-interval item, they’re replaced when leaking or while doing related jobs. Good opportunities include a timing-side service (front crank and cam seals), clutch or transmission-out work (rear main seal), or when removing driveshafts (transaxle output seals).
• Best practice: Use quality OEM or reputable Viton seals, clean and inspect the shaft surface, and use the correct installer so the lip isn’t nicked. Lightly oil the seal lip before fitment. Verify crankcase ventilation (PCV valve and breathers) so excess pressure doesn’t push new seals out.
• What to expect: Front crank or cam seals are moderate jobs, the rear main is labour-heavy as the gearbox must come out. Many cars run 150,000–250,000 kilometres before any major seal attention, but age, heat, and driving conditions matter.
• Avoid quick fixes: “Stop-leak” additives can swell rubbers and cause other issues down the track.

Handled properly, fresh oil seals keep the Stream tidy underneath, reduce oil consumption, and help protect belts, mounts, and surrounding components from oil soak.

Popular questions about 2008 Honda Stream oil seals

Where are the oil seals on a 2008 Honda Stream?
They’re at key rotating interfaces: the front crankshaft (behind the crank pulley), rear main (between engine and gearbox), camshaft ends, and at the transmission/differential where the driveshafts insert. Each does the same job — holding oil in and grime out — in different spots around the powertrain.

How often should oil seals be replaced?
There’s no set interval. Replace when they show signs of leakage or while you’re already in there for a related repair. Many Streams won’t need seals until higher kilometres or after a decade of heat cycles, but inspection at each service is the smart play.

Is it safe to drive with a leaking oil seal?
Light weeping can be monitored short term, but a proper leak can drop oil levels, foul a clutch, or coat belts and mounts. If you see drips on the ground, smell burning oil, or have to top up frequently, book it in before it escalates.