2008 Honda Accord Oil Filter: What Fits, What to Know, and What Varies

The oil filter on a 2008 Honda Accord is a small part with a straightforward job — trap contaminants before they circulate through the engine. But getting the right filter for this specific model year involves a few details worth understanding before you buy one or schedule a service.

What the Oil Filter Does

Every time your engine runs, oil picks up metal particles, combustion byproducts, and other debris. The oil filter catches that material and keeps it from grinding against engine bearings, cylinder walls, and other precision components. A clogged or wrong-spec filter can bypass oil unfiltered, allow pressure drops, or — in worst cases — contribute to accelerated wear.

On the 2008 Accord, the oil filter threads directly onto the engine block and is replaced as part of every oil change.

What Engine Is in Your 2008 Accord?

This is the first variable that matters. The 2008 Honda Accord came with two distinct engine options:

These two engines use different oil filters. The 4-cylinder and V6 are not cross-compatible when it comes to filter sizing and thread pitch. If you're sourcing your own filter before a DIY oil change, confirming your engine first is the most important step.

Filter Specifications: What to Look For

For both engines, the 2008 Accord uses a spin-on canister-style filter — the traditional design where the entire unit threads onto a mount and is discarded at each oil change (as opposed to a cartridge filter inside a reusable housing).

Key spec considerations include:

• Thread size and pitch — must match the engine's oil filter mount
• Anti-drainback valve — prevents oil from draining out of the filter when the engine is off, ensuring immediate pressure on startup
• Bypass valve pressure rating — allows unfiltered oil to flow if the filter becomes clogged, set to a specific pressure threshold
• Gasket material — the rubber O-ring seals the filter to the block; a damaged or missing gasket causes leaks

Honda OEM filters for this generation are commonly referenced under part numbers like 15400-PLM-A02 (4-cylinder) or 15400-RTA-003 (V6), though you should verify with a parts catalog against your VIN before purchasing — part numbers can vary by production run or revision.

Aftermarket vs. OEM: The Real Difference

🔧 One of the most common questions about the '08 Accord oil filter is whether aftermarket options are acceptable. The short answer is that the aftermarket is wide, and quality varies significantly.

OEM Honda filters are made to spec for these engines — correct bypass pressure, correct anti-drainback valve, correct thread fit. They're a known quantity.

Aftermarket filters from established filtration brands are often used without issue, but filter internals aren't always visible or standardized across the category. Cheaper no-name filters may have lower-quality filter media, inconsistent bypass valve ratings, or weaker gasket seals.

What matters most:

• Filter media quality — synthetic or cellulose? Higher micron efficiency matters more at extended drain intervals
• Compatibility confirmation — using a cross-reference tool or the brand's fitment guide for a 2008 Accord with your specific engine
• Bypass valve rating — should match or approximate Honda's spec for that engine

Oil Change Intervals and Filter Replacement Timing

The 2008 Accord predates Honda's Maintenance Minder system on later models — or rather, it introduced an early version of it. This model uses an oil life monitoring system that calculates change intervals based on driving conditions rather than a fixed mileage schedule.

That said, general guidance for this era:

• Conventional oil: typically 3,000–5,000 miles
• Synthetic oil: often 5,000–7,500 miles or per the Maintenance Minder
• The oil filter should be replaced at every oil change, not every other one

Extended drain intervals with a budget filter are where internal filter quality actually starts to matter. If you're running synthetic oil and stretching intervals, filter media holding capacity becomes more relevant.

DIY Considerations for This Model

The 2008 Accord is generally considered a manageable DIY oil change for someone with basic tools. A few practical notes:

• The 4-cylinder filter is relatively accessible; the V6 filter position varies and can be tighter depending on the workspace
• Use the correct filter wrench size for your filter — universal cap wrenches and band wrenches both work, but fit matters
• Hand-tighten plus a partial turn is the standard installation method for spin-on filters — overtightening can damage the gasket and make the next removal difficult
• Check the old gasket came off with the old filter; a double-gasketed filter is a guaranteed leak

What Shapes the Right Answer for Your Situation

Even for a specific model year like the 2008 Accord, the best filter choice depends on factors that vary by owner:

• Which engine you have (4-cylinder vs. V6 changes the part entirely)
• Oil type and drain interval you use (affects what filter media quality matters)
• DIY or shop service (shops may use house-brand filters; OEM availability varies)
• Budget and preference for OEM vs. aftermarket
• Where you source parts (pricing and availability vary by region and retailer)

The 2008 Accord is a well-documented platform with broad parts support, but two owners with the same model year can need completely different filters depending on which engine is under the hood — and different results depending on the oil they run and how long they wait between changes.