Attribute Schema Library
Attribute schemaautomotive aftermarket

Automotive Filters Attributes

Automotive filters cover engine oil, air, cabin air, fuel and water-separator, and transmission service, sold through warehouse distributors, jobbers and e-tailers to installers, fleets and DIY buyers. The record is half spec and half fitment: a filter is only correct for a given engine, so application rows matter as much as can dimensions.

The data is hard for a structural reason. Fitment travels in ACES, product information in PIES, from different systems on different schedules, rarely reconciled. One popular filter carries thousands of application rows against a VCdb that keeps moving, so a complete record quietly goes stale. The same filter also ships under several brands, each with its own numbering and datasheet layout.

Then the specs get dropped. Manufacturers publish by-pass setting, gasket O.D. and I.D., burst pressure and media on the part detail page. Distributor catalogs import the part number and the fitment and leave the rest in the PDF. What's left on the rail is a thread size and a picture of a can — with inches, millimetres and fractions sharing one column.

Core

Every SKU needs these. Without them the record is not a product, it is a row.

Part Type (PCdb Terminology)
enum
Engine Oil Filter

The top-level split. Oil, air, cabin, fuel and transmission filters share no facets. PCdb terminology IDs keep it consistent across trading partners.

Filter Style
enum
Spin-On

Spin-on vs cartridge decides whether the buyer needs a can with a gasket or a bare element plus housing seals. First facet on every rail.

Manufacturer Part Number
identifier
51348

The number the counter person and the installer both type. Must be the clean MPN, not a prefixed internal SKU.

Brand
identifier
WIX

Filters are bought by brand as much as by spec. Maps to the Auto Care Brand Table code for ACES/PIES exchange.

Vehicle Fitment (ACES)
text
2011-2019 Ford F-150 5.0L V8

A filter is only correct for an application. Year/make/model/engine rows are the record, not a note in the description field.

Thread Size
enum
3/4-16 UNF

Spin-on filters thread onto the adapter. SAE and metric both in play; wrong pitch means the part does not go on at all.

Height
number · in
3.404 in (86 mm)

Clearance against subframe, crossmember and skid plate. Also the main lever when a buyer wants more capacity in the same thread.

Outer Diameter
number · in
2.921 in (74 mm)

Determines whether the can clears the block and whether a standard cap wrench fits. Paired with height on every size-lookup tool.

Gasket O.D. / I.D.
number · in
2.734 in O.D. / 2.430 in I.D.

Two filters can share 3/4-16 thread and still not seal. The gasket has to land squarely on the mount face or it weeps or blows off.

GTIN / UPC
identifier
765809513488

Required for marketplace listing, scanning at the counter and matching against distributor item masters.

Differentiating

What buyers actually compare on. This is where catalogs win or lose the filter.

Filter Media
enum
Enhanced Cellulose

Cellulose, blend or full synthetic sets efficiency, capacity and price tier. The single biggest driver of what the filter costs.

Filtration Efficiency @ Micron
text
99% @ 20 µm (ISO 4548-12)

A bare micron number is not comparable between brands. Efficiency at a stated size, with the test method named, is.

By-Pass Valve Setting
range · psi
8-11 psi

Sets the differential at which unfiltered oil bypasses the media. Must match the engine's design; a boolean 'has bypass' is not enough.

Anti-Drainback Valve Material
enum
Silicone

Silicone holds its seal in cold-start service where nitrile can stiffen and let the filter drain down. Buyers in cold climates ask by name.

Interchange / Cross-Reference
text
FRAM PH3593A; Purolator L14459

Filters are shopped by the competitor's number. Structured interchange is what turns 'FRAM PH3593A' into a hit on your own site.

Service Interval Rating
number · mi
10,000 mi

How retail filter rails segment good/better/best. Buyers running extended drains filter on it directly.

Compliance & identifiers

Standards, regulatory data, and the identifiers channels reject you for missing.

Country of Origin
identifier
US

PIES EXPI field. Drives duty treatment, fleet and government sourcing rules, and is requested on most RFQs.

CA Prop 65 Warning
boolean
true

California-destined listings need the warning state carried on the record. Marketplaces suppress or flag items that omit it.

The fields that aren't in the schema at all

What most automotive filters catalogs are missing.

The table above is the schema most catalogs already have. These are the attributes that usually aren't in it — each one surfaced by a signal from the live market rather than by an audit of what's already there. This is what Anglera's Schema Foundry does on a real catalog, in this category.

Search signal
+ Interchange / Cross-Reference Numbers

Buyers arrive with a competitor's number. Every manufacturer runs a cross-reference lookup; most distributor catalogs answer 'FRAM PH3593A' with zero results because interchange sits in a PDF chart.

The search that would have converted returns nothing. The buyer goes to the manufacturer's cross-reference tool and buys wherever it sends them.

Supplier signal
+ Anti-Drainback Valve Material

Manufacturer sheets print 'Anti-Drain Back Valve: Yes' and nothing more. Catalogs carry the boolean forward, so silicone and nitrile parts look identical while buyers ask for silicone by name.

Cold-start rattle complaints, a warranty argument with the installer, and a rail that cannot answer the one question the buyer came with.

Competitor signal
+ Filtration Efficiency at a Stated Micron, with Test Standard

Catalogs list a bare nominal micron rating. The Filter Manufacturers Council called nominal ratings unstandardized decades ago; ISO 4548-12 efficiency is the comparable number and is usually absent.

Premium media cannot be defended against a cheaper part on the same shelf. Price becomes the only visible difference.

Review signal
+ Gasket O.D. / I.D.

Thread size is carried; gasket dimensions are not. Two filters both spec'd 3/4-16 can have different gasket O.D., and only one of them seals on that mount face.

Wrong part ships, leaks on start-up, comes back as a return with an oil-loss claim attached. The costliest failure in the category.

Supplier signal
+ By-Pass Valve Setting (psi)

Datasheets give a real range such as 8-11 psi. Distributor records reduce it to a yes/no bypass flag, so applications needing a specific setting cannot be filtered at all.

Fleet and performance RFQs that specify a bypass range cannot be answered from the catalog and get quoted by hand or lost.

How Schema Foundry finds these

Messy in, governed out.

The same value, spelled every way automotive aftermarket suppliers spell it. A filter only works once they agree.

Thread Size
3/4-163/4"-16 UNF0.75-16M20 x 1.520mm x 1.520X1.5
3/4-16 UNF | M20-1.5

SAE and metric land in the same column as free text. Until the format is fixed, thread cannot be a facet at all.

Anti-Drainback Valve
YesYADBVSilicone ADBNitrileBuna-N
Present: true | Material: Silicone

One supplier field mixes presence and material. Split into a boolean plus a material enum or the rail can only say yes/no.

Filter Media
CellulosePaperEnhanced CelluloseSynthetic BlendGlass/SyntheticMicro-glass
Cellulose | Blend | Full Synthetic

Paper and cellulose are the same thing; blend and glass/synthetic are not. Collapsing wrong destroys the price tier.

Dimensions
3.4043.404 (86)86mm86 mm3-13/32 in2.921 in.
3.404 in (86 mm)

Manufacturers print inches with mm in parentheses; feeds send one, the other, or fractions. Store a number and a unit, not a string.

What buyers ask

Every one of these should be answerable from the attributes above. If it isn't, that's a gap.

  • Does this fit a 2018 F-150 5.0L?
  • What's the FRAM equivalent of this WIX number?
  • Is the anti-drainback valve silicone or nitrile?
  • What's the bypass valve setting in psi?
  • The thread is 3/4-16, but is the gasket O.D. the same as my old filter?
  • What's the efficiency, at what micron, and tested to which standard?
  • Is this cabin filter activated carbon or particulate only?
  • Will this filter go the full 10,000 miles?

What channels require

The same SKU, different mandatory fields per destination.

Amazon Automotive (Part Finder)
ACES fitment file (3.2)Brand (Brand Table code)Part typeMPNUPC/GTINCA Prop 65 warning
eBay Motors (Parts Compatibility)
ACES-derived fitment rowsBrandMPNInterchange part numbersPart type
ACES/PIES trading-partner feed
ACES 5.0 fitmentPIES 8.0 item + attributePCdb terminology IDPAdb attribute codesInterchange segmentCountry of origin (EXPI)
Distributor year/make/model catalog
Fitment rowsThread sizeHeight / O.D.Gasket O.D. / I.D.MediaBypass setting

Automotive Filters data, in practice

Fitment already tells me the filter fits. Why carry the physical specs at all?

Because fitment answers one question and buyers ask several. A filter that fits by ACES may still be the wrong choice: two spin-ons sharing a 3/4-16 thread can differ in gasket O.D., can height, bypass setting and anti-drainback material. Buyers upsizing for capacity, working in cold-start service, or matching a fleet spec are choosing between parts that all pass the fitment test. Fitment gets them to a shortlist of five. The specs are how they pick one — and if your record can't support that, they go read the manufacturer's datasheet and buy from whoever that page links to.

Is a micron rating enough to describe filtration performance?

No, and this is long-settled in the category. The Filter Manufacturers Council issued a technical bulletin on exactly this point: nominal micron ratings are not measured to a common method, so one brand's 21 micron is not another's. The comparable figure is efficiency at a stated particle size against a named test — ISO 4548-12 for full-flow engine oil filters, ISO 5011 for air, SAE J905 for fuel, ISO/TS 11155-1 (or DIN 71460-1) for cabin particulate, SAE J1839 for emulsified water separation on diesel. Carry the percentage, the micron size and the standard as three facts. A bare micron number on a rail invites a cheaper part to look identical.

Do I need both ACES and PIES, and where do filter specs live?

Both, and they do different jobs. ACES (current release 5.0) carries vehicle application — which filter fits which year/make/model/engine, built on the VCdb with qualifiers from the Qdb. PIES (current release 8.0) carries the part itself: item, descriptions, pricing, packaging, digital assets, interchange, and the attribute segment where thread size, gasket dimensions, media and bypass setting belong, coded against the PCdb for part terminology and the PAdb for attributes. Filter specs belong in PIES attributes, not in a description blob. Note that channels lag the standard — Amazon still ingests ACES 3.2 — so the same catalog has to emit more than one vintage.

Why is this category harder to keep current than most?

Volume and cadence. A single popular filter can carry thousands of application rows, and the VCdb is updated on a rolling basis as new vehicles and engine configurations are added — so a record that was complete last quarter is quietly incomplete now. Meanwhile the same physical filter is sold under several brands with independent numbering, each supplier publishing its own datasheet, its own field names and its own units. Fitment and product data arrive from different systems on different schedules and are rarely reconciled against each other.

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Run this against your own automotive filters.

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