OEM Exhaust Manifold Gasket 17173-21020: How to select the right one?

OEM Exhaust Manifold Gasket 17173-21020: How to select the right one?

Are you dealing with exhaust leaks or rattling under the hood? The right OEM Exhaust Manifold Gasket 17173‑21020 could be the solution.

It’s the factory-grade gasket sealing the exhaust manifold to the cylinder head on many Toyota and Scion 1.5 L models from 2000–2019, engineered to prevent leaks and ensure optimal engine performance.

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Let’s explore five real Google PPA questions people ask about this part, so you can find precise answers and make informed decisions.

What vehicles does part 17173‑21020 fit?

Curious if your car is compatible with this gasket?

It fits Toyota Yaris, Prius, Prius C, Echo, and Scion xA/xB with 1.5 L NZ-series engines produced between 2000–2019.

Why is fitment accuracy important?

Using an incompatible gasket causes exhaust leaks, misalignment, and engine inefficiency. Always verify via VIN or vehicle picker on OEM parts sites.

How much does the OEM gasket cost?

Looking for the price before ordering?

At Hengoseal, we offer direct factory pricing—under $1 per unit—for the OEM 17173‑21020 Exhaust Manifold Gasket, making it one of the most cost-effective solutions on the market.

Is the price worth it?

Absolutely. For less than $1, you get a guaranteed OEM-quality product with factory-level fit, plus our technical support and fast delivery. This is unbeatable compared to $17–$27 listings on other platforms.

Is it better than aftermarket alternatives?

Should you risk performance with cheaper options?

Genuine Toyota OEM-spec parts like the 17173‑21020 gasket ensure precise tolerances, multi-layer steel construction, and durability that many aftermarket versions lack.

What can go wrong with aftermarket?

Cheaper gaskets often warp or fail under heat. Customers report noise recurrence, emissions issues, and extra labor replacing failed aftermarket seals. OEM avoids these risks entirely.

How do I install gasket 17173‑21020?

Want to tackle the install yourself?

Remove manifold, clean both mating surfaces, install the new gasket, and torque bolts in a crisscross sequence to manufacturer spec (~40 Nm). Retorque after cooling for best results.

Pro-tips:

  • Use proper torque wrench to avoid overtightening.
  • Replace damaged studs or bolts.
  • Run engine and check for leaks using soapy water.

Where can I buy OEM 17173‑21020 safely?

Looking for a reliable source?

Buy directly from us at OEM 17173‑21020 Exhaust Manifold Gasket.
Hengoseal offers factory-direct pricing under $1, fast global shipping, and full customization support.


Ready to fix your exhaust leak for under $1?

Protect your engine and performance—order the OEM 17173‑21020 Exhaust Manifold Gasket from Hengoseal today. We ship globally with B2B support, low MOQs, and direct-from-factory pricing. For bulk orders or customization, contact [email protected] or WhatsApp +86 17622979498.

Related topic

Toyota Intake Manifold Gasket 17177-21040 Guide
Fixing EGR Pipe Gasket 25634-21020 Issues
How to diagnose an exhaust manifold gasket leak



People Also Ask

1. Can I reuse the old gasket after removal?
Reuse is risky—OEM gaskets are single-use and lose seal integrity once compressed.
2. Will a bad gasket trigger a check-engine light?
Yes—leaks upstream of the O₂ sensor may cause error codes and degraded performance.
3. Does it need gasket sealant?
No—OEM gaskets are designed for dry installation. Only use sealant if surfaces are damaged.
4. How long does a good gasket last?
OEM units often last the lifespan of your engine (200k+ km) unless exposed to extreme conditions.
5. Can I install it myself?
With proper tools and torque specs, yes—but if unsure, a mechanic can ensure proper alignment and sealing.
6. Does replacing it improve fuel economy?
Yes—restores correct backpressure and sensor readings, improving efficiency and reducing emissions.
7. When should I replace it?
Replace immediately if you notice ticking noises, poor acceleration, or exhaust smell under the hood.
8. Are there performance upgrades available?
Aftermarket high-temp multi-layer steel gaskets exist but OEM is preferred for daily reliability—upgrade only for heavy-duty use.

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