PRODUCT DETAILS
Honda OEM Distributor O-Ring - B/D/F/H Series Engines
Your Integra or Civic or Accord is leaking oil from the distributor. You're seeing a drip coming from where the distributor cap bolts down. The oil's pooling on top of the valve cover. After 25+ years the rubber o-ring that seals the distributor to the engine has dried out and cracked. Oil's weeping past the seal. This is genuine Honda OEM part 30110-PA1-732. It's the correct o-ring for B, D, F, and H series engines. The o-ring sits between the distributor housing and the engine block. It seals the opening so oil doesn't leak out. When it fails you get a slow seep that turns into a steady drip. Replace the o-ring when you see oil leaking from the distributor base. You're already pulling the distributor to get at the o-ring so change the rotor and cap while you're in there. Don't put a used distributor back in with an old o-ring.
Here's Why Distributor O-Rings Fail
The distributor o-ring sits where the distributor bolts to the engine block. The seal's constantly exposed to engine heat and oil. The rubber gets brittle from heat cycling. UV exposure degrades the rubber. The o-ring loses elasticity. It shrinks. It cracks. Oil starts seeping around the edges. At first it's just a light weep. You see a little moisture on the valve cover. Days go by. The leak gets worse. Oil's pooling on the valve cover. Oil's dripping onto the intake manifold and burning off. You're smelling burning oil. The smell gets stronger. The leak gets worse. Eventually the o-ring's so degraded that oil's running down the side of the engine. You're losing fluid. You're making a mess. The oil gets on the alternator and other engine bay components. Replace the o-ring before the leak gets that bad.
O-Ring Seals the Distributor Base - That's It
The o-ring is a simple rubber seal. It goes between the distributor housing and the engine block. When you bolt the distributor down the o-ring compresses and creates a seal. The seal keeps pressurized oil from leaking out around the bolt holes. That's the whole job. When the o-ring fails that seal's gone. Oil weeps out. Replace the o-ring and the seal works again. You're not replacing the distributor. You're not replacing anything else. Just the o-ring. Five minute job once you've got the distributor off.
Replace It When You're Pulling the Distributor - Do It Right
If you're seeing oil leaking from the distributor base you need to pull the distributor. Once you've got it off look at the o-ring. If it's cracked or hard replace it. We've seen people pull the distributor, clean it up, wipe away the oil, and reinstall it with the same old o-ring. The leak comes back immediately because the o-ring was the problem the whole time. They wasted the labor. Don't do that. Replace the o-ring. While you're in there replace the rotor and cap too. If the distributor's coming off you're already doing the work. Fresh rotor, fresh cap, and fresh o-ring means everything's new. The ignition system's refreshed. You're not going to be back in there in six months because you skipped one of the components.
Honda OEM O-Ring - The Right Compound
This is genuine Honda OEM part 30110-PA1-732. It's the o-ring Honda installs on B, D, F, and H series engines at the factory. The rubber compound's engineered to handle engine heat and oil exposure. The size matches the distributor housing perfectly. It compresses and seals the way it's supposed to seal. Aftermarket o-rings are cheaper. Some are fine. Some are the wrong durometer. We've seen cheap aftermarket o-rings that are too soft. They compress too much and don't seal right. Oil still leaks around them. We've seen o-rings that are too hard. They don't compress enough to create a proper seal. Oil leaks immediately. We've seen aftermarket o-rings made from rubber that degrades faster in engine heat. They crack and harden after a year. The distributor seal is critical for keeping oil where it belongs. It's not where you use a generic o-ring and hope it works. Buy the Honda o-ring. It's the right compound. It seals correctly. You install it once and the leak stops.
What You Get
- Honda OEM distributor o-ring - part number 30110-PA1-732
- Fits B, D, F, H series engines
- Genuine Honda o-ring - not aftermarket
- Direct replacement
- One o-ring per order
Fits These Cars
- 1986-2001 Acura Integra
- 1976-1997 Honda Accord
- 1998-2002 Honda Accord DX Sedan
- 1973-2000 Honda Civic
- 1999-2000 Honda Civic
- 1997-2001 Honda CR-V
- 1988-1991 Honda CRX
- 1993-1997 Honda Del Sol
- 1979-2001 Honda Prelude
Note: Distributor o-ring for B, D, F, H series engines. Genuine Honda OEM part 30110-PA1-732. Sits between distributor housing and engine block. Seals opening to prevent oil from leaking past distributor base. Failed o-ring causes oil weeping from distributor base, dripping on valve cover, burning smell, oil loss. Replace when oil leaking from distributor. Replace while pulling distributor (already doing the labor). Consider replacing rotor and cap at same time (all three components are old if distributor's being serviced). Don't reuse old o-ring in pulled distributor. One o-ring per order.