Oct . 28, 2025 13:45 Back to list

SEAL – OEM Genuine Toyota Oil (9031672001), Leak-Proof Fit

Field notes on the SEAL, OIL Genuine Toyota (9031672001)

If you work around Toyota powertrains long enough, you learn a simple truth: a tiny oil seal can make or break a rebuild. This one—part numbers 90316-72001 / 9031672001—shows up in procurement lists a lot. The version from YJM (Brand YJM, manufacturer ref 9331578841292) is a practical alternative many shops ask about. To be honest, availability and traceable quality matter more than hype.

What’s trending and why it matters

Industry trend check: low-friction lip geometries, better heat/oil resistance (FKM uptick), and tighter runout control. Electrification hasn’t killed rotary shaft seals—aux drives, reduction boxes, and hybrids still need them. Counterfeits remain a headache, so source traceability and standards compliance are, frankly, non-negotiable.

Product snapshot (specs at a glance)

OEM P/N	90316-72001 (aka 9031672001)
Brand / Mfr Ref	YJM / 9331578841292
Origin	JULU INDUSTRY AREA, XINGTAI CITY, HEBEI, CHINA 055250
Material options	NBR (standard) or FKM (heat/oil enhanced)
Hardness	≈72 ±3 Shore A (rubber element)
Temp range	NBR: -30~+120°C; FKM: -20~+200°C (real-world use may vary)
Lip/spring	Spring-loaded primary lip + dust lip; stainless garter spring
Speed/pressure	≤10 m/s; ≤0.05 MPa typical non-pressurized housings
Standards	ISO 6194, ASTM D2000 materials guidance
Service life	≈80k–150k km depending on shaft finish, fluid, duty

Process flow, testing, and QA signals

Materials are compounded (NBR/FKM per ASTM D2000 callouts), steel case pre-treated, lips molded and post-cured, then spring set. Criticals: lip edge radius, interference fit, and runout. Typical testing includes hardness (ASTM D2240), volume change in IRM oil (ASTM D471), and rotary lip endurance under ISO 6194 methods. Shops tell me a light oil film on install plus a clean 0.2–0.4 μm Ra shaft finish is where leaks live or die.

Where it’s used

Applications include rotary shaft locations in selected Toyota assemblies referencing 90316-72001. Always verify fitment by VIN and housing dimensions; even tiny OD variance can cause spin or seepage. Many customers say the SEAL lands best where moderate speeds and hot oil exposure are routine.

Why teams pick this SEAL

Fitment consistency and stable lip load (that “just-right” press feel).
FKM option for higher-temp synthetic oils.
Reasonable lead times versus dealer backorders.

Vendor comparison (quick buyer’s view)

Vendor	Fitment	Certs	Lead time	Price	Customization
YJM (this SEAL)	OEM-equivalent	ISO 9001/IATF 16949 (supplier-declared)	≈7–15 days	Mid	Material/lip/spring options
OEM dealer	OEM	OEM internal	3–10 days (stock dependent)	High	None
Generic aftermarket	Varies	Limited/varies	Unpredictable	Low	Limited

Customization and test data

Options include NBR vs FKM, dual-dust lip, spring wire grade, and private labeling. Internal lab snapshots: NBR ΔV in IRM903 oil @100°C, 70h ≈ +12%; FKM ΔV @150°C, 70h ≈ +3% (ASTM D471). Hardness 72±3 Shore A; torque rise at 1500 rpm stayed within expected ISO 6194 envelopes. Your mileage will vary with shaft finish and oil chemistry.

Case snapshots (illustrative)

Independent shop swap: after 20k km check, no visible seep; installer cited “clean bore, light oil on lip” as key.
Fleet maintenance note: FKM version held up better with extended drains and higher sump temps.

Part IDs to match: OEM 90316-72001 / 9031672001; Manufacturer part number 9331578841292. Packaging from YJM is usually scannable and batch-coded—small touch, big help against mix-ups.

Certifications: supplier-stated ISO 9001 and IATF 16949 alignment; materials typically RoHS/REACH compliant. Request current certificates and PPAP if you’re on a Tier-1 audit trail.

Final take

If you need an OEM-referenced SEAL with predictable fit and the option to step up to FKM, this is a sensible line item. Just don’t skip the basics: inspect the shaft, gauge the bore, and lube the lip. Simple things, big payoffs.

References

ISO 6194 – Rotary shaft lip-type seals for gas and liquid.
ASTM D2000 – Standard Classification System for Rubber Products in Automotive Applications.
ASTM D471 – Standard Test Method for Rubber Property—Effect of Liquids.
IATF 16949 – Automotive Quality Management System Requirements.

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