GST on Engine Parts

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GST on engine parts is 18% for components classified under HSN 8409, following the 56th GST Council's rate rationalisation effective 22 September 2025. This includes pistons, crankshafts, camshafts, cylinder heads, valves, and other engine repair components used in passenger vehicles, commercial vehicles, and industrial machinery. Whether you are managing auto repair work, replacing worn-out parts, or sourcing components through your procurement chain, the revised GST rate on engine parts directly affects your maintenance costs and workshop billing. For GST-registered businesses involved in auto repair, manufacturing, or resale, Input Tax Credit (ITC) remains available, reducing the effective auto spare tax burden on eligible purchases.

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GST Rate on Engine Parts at a Glance

The GST rate on engine components depends on their HSN classification.

This structure creates uniform taxation across the engine spare GST and auto repair ecosystem.
Most engine parts under HSN 8409 attract 18% GST
40% for luxury or larger/hybrid cars and SUVs
OEM and aftermarket GST rates are usually the same
Some related mechanical parts may attract different GST rates depending on classification
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Rate by Engine Part Type: Quick Reference

  1. Engine Component

    1. Pistons and piston rings
    2. Crankshafts and camshafts
    3. Cylinder heads and valves
    4. Engine repair components under HSN 8409
    5. Certain related mechanical parts

  2. GST Rate

    1. 18%

    2. 18%
    3. 18%
    4. 18%
    5. Depends on classification

  3. What It Means for You

    1. Lower engine rebuild cost compared to earlier
    2. Reduced impact on repair bills
    3. More cost-effective servicing
    4. Lower maintenance parts tax
    5. GST varies by HSN code
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What the Rate Means for Your Purchase Cost

GST adds a substantial amount to engine replacement and servicing costs, though the revised 18% rate from the 56th GST Council brings meaningful relief compared to the earlier 28%.

Example:

A crankshaft priced at ₹60,000 attracts 18% crankshaft GST = ₹10,800.

Total payable = ₹70,800.

For fleet operators and workshops handling frequent auto repair work, this reduction significantly improves maintenance budgets and spare supply chain costs compared to what was applicable before September 2025.

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GST on Engine Components and Accessories

Most engine repair components classified under HSN 8409 attract 18% GST. This includes pistons, cylinder liners, valves, and crankshafts.

However, some related parts may attract different GST rates depending on classification and usage. These may include:

Correct HSN classification is important for accurate mechanical parts GST billing and ITC claims.
Turbochargers
Fuel pumps
Exhaust systems
Certain fuel injection components
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How to Calculate GST on Engine Parts

To calculate GST on engine spare parts:

Total Cost = Base Price × (1 + GST Rate)

Example:

A piston set costs ₹20,000

18% piston GST = ₹3,600

Total payable = ₹23,600

This excludes labour charges, freight, and installation costs.

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Impact of GST on Engine Parts Costs

The GST structure directly affects repair and maintenance expenses across the automotive industry.

Auto repair workshops, fleet operators, and manufacturers benefit the most from ITC availability.
18% GST reduces engine repair costs compared to the earlier 28% rate
No GST difference between OEM and aftermarket parts in most cases
Uniform taxation simplifies spare supply chain pricing
ITC reduces effective cost for GST-registered businesses
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Input Tax Credit (ITC) on Engine Parts

ITC is available under standard GST rules when:

ITC is generally not available for personal vehicle repairs.
Engine parts are purchased for business use
The buyer is GST-registered
Valid GST invoices are maintained
Parts are used for taxable supply, repairs, manufacturing, or resale
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GST Benefits for Engine Parts Buyers

The GST system offers several operational benefits.

This improves pricing predictability for businesses involved in maintenance and repair operations.
Transparent auto spare tax structure
Uniform pricing across states
Easier interstate procurement
Seamless ITC across the spare supply chain
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Why GST Matters for Your Engine Parts Purchase

GST forms a major portion of engine servicing and repair costs.

Before purchasing, you should:

This helps avoid incorrect billing and improves maintenance cost planning.
Verify the correct HSN classification
Check GST rates on every invoice line item
Confirm ITC eligibility for business purchases
Compare OEM and aftermarket component pricing carefully
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GST Reforms 2.0 on Engine Parts

The GST rate on engine parts classified under HSN 8409 was revised from 28% to 18% by the 56th GST Council, with effect from 22 September 2025. This forms part of a broader rate rationalisation across the automotive sector, where a uniform 18% rate was introduced for all auto parts irrespective of their HSN code. The revision brings immediate relief to workshops, fleet operators, and distributors managing high-volume procurement. For businesses that were already claiming ITC at 28%, the revised rate also reduces the working capital tied up in GST outflows before credit is settled. Long-term procurement and maintenance budgets can now be planned at a lower effective cost.

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Additional Costs to Consider

Apart from GST on engine parts, buyers should also budget for:

These costs increase the final repair or replacement bill.
Labour charges with 18% GST
Freight and logistics costs
Customs duty on imported components
Annual maintenance contract charges
Diagnostic and installation fees
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FAQs

What is the GST on engine components?
GST on engine components classified under HSN 8409 is 18%, revised from 28% effective 22 September 2025 as per the 56th GST Council's recommendations. This includes pistons, crankshafts, cylinder heads, and valves used in automotive and industrial engines.
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How does engine spare GST affect repair cost?
Engine spare GST at 18% adds directly to repair bills, though it represents a meaningful reduction from the earlier 28% rate. For example, a ₹1,00,000 engine parts invoice now attracts ₹18,000 GST. Businesses can reduce this further through ITC claims.
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Is piston GST part of the same category?
Yes. Piston GST falls under HSN 8409 and attracts 18% GST across petrol and diesel engine applications, following the rate revision effective 22 September 2025.
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Does crankshaft GST fall under the same rate?
Yes. Crankshaft GST is 18% under HSN 8409. The same rate applies to most crankshafts and camshafts used in engines, in line with the uniform auto parts rate introduced by the 56th GST Council.
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What is the GST rate on engine parts?
Most engine parts classified under HSN 8409 attract 18% GST, effective 22 September 2025. However, certain related mechanical parts may attract different GST rates depending on classification and product type.
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Disclaimer

Shriram Finance strives to provide accurate and timely information about its products and services on its website and related platforms. Details mentioned here may vary from institution to institution and based on the customer profile. The content presented is intended for general informational purposes only and should not be considered a substitute for official product or service documentation. In cases of discrepancy, the terms specified in the official product or service documents will take precedence. Users are encouraged to consult with qualified professionals before making any decisions based on the information provided. Please review our Disclaimer page for detailed terms and conditions before making any financial decisions.

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