Mazda 3 Door Lock Actuator Mechanism for 2003-2007 BK Hatch/Sedan (8N6A-A21812-G)

5.00 out of 5
(Read 4 Customer Reviews)
Mazda 3 Door Lock Actuator
Mazda 3 Door Lock Actuator
Mazda 3 Door Lock Actuator
Mazda 3 Door Lock Actuator
Mazda 3 Door Lock Actuator
Mazda 3 Door Lock Actuator

Mazda 3 Door Lock Actuator Mechanism for 2003-2007 BK Hatch/Sedan (8N6A-A21812-G)

Product Rating:

5.00 out of 5
(Read 4 Customer Reviews)

230 Units Sold

Original price was: $125.00 – $200.00Price range: $125.00 through $200.00.Current price is: $88.30 – $148.30Price range: $88.30 through $148.30. (Inc. GST)

Late delivery? $15 cashbackIn-stock Australian orders · See how it works

Trade pricing available

Are you a trade customer?

Mechanics, workshops and automotive businesses — call before ordering to get your trade price.

Call 0423 113 802

Ask us about trade discounts on this part.

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3-year warrantyReplacement cover · view terms Australian supportContact our local team
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Fitment helpSend your VIN or part number

Mazda 3 Door Lock Actuator, listed for BK · 2003-2007. Match the latch, connector, linkage and mounting holes. Confirm the body style and required position before ordering. Select the required option above; the selected variant must match your original component.

Australian orders under 500g receive free express postage. Orders weighing 500g or more receive free regular postage. Delivery estimates and available upgrades are shown at checkout.

Three-year replacement warranty. Professional installation and retained receipts are required. See the warranty terms for cover, exclusions and the claim process.

At Parts Factory Australia, we stand behind every product we sell. That’s why every part comes with our 3-Year No Bullsh*t Warranty. If the part fails within 3 years due to a manufacturing defect, we’ll replace it or refund it — no fine print, no runarounds, no waiting weeks for answers.

It covers all parts we sell and all genuine faults — not damage from dodgy installs, crash damage, or backyard modifications. Just send us your proof of purchase and show us what went wrong — we’ll sort it fast.

We move through stock quickly, so you’re not getting old junk from the back of a warehouse. Our parts are fresh, current, and built to last — and if they don’t, we’ll make it right. That’s the Parts Factory promise. Simple. Honest. Aussie.

We prioritise fast and reliable shipping so you can get back on the road without the wait. Orders placed during business hours are dispatched immediately for fast turnaround.

✔️ Free Express Post on orders under 1kg – arrives in 2 days (3 days for WA)
✔️ Standard Delivery for any part – 2 to 4 days Australia-wide
✔️ Need it sooner? Upgrade to Express for just $15 flat-rate anywhere in the country

No delays, no excuses — just quick delivery and quality parts at your door. 

  • Trusted Aussie Supplier – Born and based in Australia, we understand the urgency of keeping your vehicle on the road. No offshore call centres, no slow imports — just fast, local service.

  • Fast & Free Shipping – Most parts are dispatched same-day with free express shipping on smaller orders. Need it quicker? Flat-rate express available. We don’t keep you waiting.

  • 3-Year No Bullsh*t Warranty – We stand by what we sell. If it fails from a genuine fault, we replace it or refund it. No excuses, no long waits — just honest backup.

  • Fresh, Up-to-Date Stock – We turn stock over quickly, so you always get the latest, most up-to-date versions — not old, dusty parts that have been sitting on shelves for years.

  • OEM Fitment, Affordable Price – We partner with medium-to-high-tier manufacturers to deliver OEM-matching quality without the dealership price tag.

  • Real People, Real Knowledge – Our team comes from hands-on, wrecking-yard backgrounds — we know cars, not just part numbers. Call us, message us, or visit — we’re here to help.

In Stock: Free AU Shipping · Delivery estimate at checkout
2003 2004 2005 2006 2007 8N6A-A21812-G

Google reviews

Trusted by Parts Factory customers

4.6 / 5500 Google reviews

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★★★★★
“Everything arrived well-packaged and in perfect condition, exactly as described.”
Read Dylan’s review on Google ↗
Lyndel McAuliffeGoogle review · Window regulator
★★★★★
“After watching their tutorial I figured I could do this myself. … Now I have a window that works perfectly.”
Read Lyndel’s review on Google ↗
Reddawn DawnGoogle review · Alternator
★★★★★
“I ordered an alternator and it arrived within days, well packed and in good order. Communication was great.”
Read Reddawn’s review on Google ↗
Sanjit RijalGoogle review · Customer service
★★★★★
“It's not always easy dealing with returns, but they handled it professionally and quickly. I really appreciate the support they provided.”
Read Sanjit’s review on Google ↗
Chris PeacockGoogle review · Parts Factory Australia
★★★★★
“Questions answered quickly and order processed and delivered as per order.”
Read Chris’s review on Google ↗

Selected excerpts about Parts Factory Australia. Rating checked 25 September 2026.

Description

YOUR PART. EVERY DETAIL.
Mazda 3 Door Lock Actuator

The right part.
Down to the detail.

Mazda 3 Door Lock Actuator, listed for BK · 2003-2007. Match the latch, connector, linkage and mounting holes. Confirm the body style and required position before ordering. Select the required option above; the selected variant must match your original component.

Ask our team about fitment ↗
Listed applicationBK · 2003-2007
Specificationlock actuator
Reference8N6A-A21812-G

Reference 8N6A-A21812-G. Send our team your exact model, build date and a photo of the original part if you need a fitment check.

Mazda 3 Door Lock Actuator — product detail (options vary)
Australian testedBefore dispatch
Mazda 3 Door Lock Actuator — additional product view (check selected option)
The details matter. So does the supplier.
Carefully selected. Locally tested.

Confidence starts
before dispatch.

We select our manufacturers for quality, and every part is tested in Australia before it leaves us. It’s a standard we stand behind with local support.

Every partTested in Australia
3 yearsReplacement warranty
Meet our selected manufacturers ↗
Sent from Queensland

Less waiting.
More driving.

Australian orders under 500g receive free express postage. Orders weighing 500g or more receive free regular postage. Dispatch is from Queensland; availability and delivery estimates are shown at checkout.

Delivery information ↗
Orders under 500g

Free express postage.

Express delivery is included for Australian orders under 500g.

Orders 500g and over

Free regular postage.

Heavier orders travel by regular post at no delivery charge. See the shipping policy for available options.

Clear delivery information

Know what to expect.

Check the shipping policy for delivery information, or contact our team before ordering.

Parts Factory Australia team member packing a parts order at the warehouseShelves of boxed automotive parts in the Parts Factory Australia warehouse
Behind the scenes
at Parts Factory
Family owned. Australian operated.

Real people.
Behind every part.

For nine years, our family-owned business has helped Australians find the parts they need. From checking an application to after-sales support, you can speak with our local team.

Get to know Parts Factory ↗
9 yearsIn business
QueenslandOur Australian base
56 Export Drive, Molendinar QLD 4214Talk to our Gold Coast team · 0423 113 802
Parts Factory Australia warehouse — play our company introductionMeet Parts Factory Australia▶ Short intro
Our business introductionWatch on YouTube ↗
🎬 From our YouTube channel

Real people.
Practical know-how.

Get to know Parts Factory Australia, then explore our installation tutorials, parts guides and practical tips on YouTube.

Explore our YouTube tutorials ↗

Tutorial availability varies by part and vehicle. Check the exact application and follow the product’s professional installation requirements.

3

Years of replacement cover.

Professional installation and receipts are required.
Read the full warranty terms ↗

Help when you need it.

Contact our team for fitment, delivery or after-sales support. View our 7-day returns policy and conditions ↗

Before you order

Good questions.
Clear answers.

A few details now can help you choose the right part first time.

Ask us a question ↗
How do I check this lock actuator fits?

Mazda 3 Door Lock Actuator, listed for BK · 2003-2007. Match the latch, connector, linkage and mounting holes. Confirm the body style and required position before ordering. Select the required option above; the selected variant must match your original component. Compare the original part and vehicle details; contact us before ordering if anything differs.

Which option should I choose?

Position on vehicle: Drivers Front, Pair of Two Fronts, Passenger Front. Choose the required option above and check its price, availability and pictured components. Listed parent reference: 8N6A-A21812-G. References and included components may vary by option. Match the latch, connector, linkage and mounting holes. Confirm the body style and required position before ordering. Select the required option above; the selected variant must match your original component.

Is it shipped from Australia?

Australian orders under 500g receive free express postage. Orders weighing 500g or more receive free regular postage. Dispatch is from Queensland; availability and delivery estimates are shown at checkout.

Is there a guide for my installation?

Our YouTube channel includes installation tutorials and parts guides. Check for your exact part and vehicle; not every application has a guide. The video on this page introduces our business.

What does the replacement warranty require?

Professional installation and retained receipts are required. Read the warranty terms for the cover, exclusions and claim process.

Explore the range

More parts. Local support.

Other products from our range. Compatibility varies; check each listing for your model, engine and build date.

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Part Numbers (See Below)

Main Part Numbers: 8N6A-A21812-G

Any other Recorded Part Numbers: No others Recorded

Comments on Part Number Importance: It’s more important to confirm that the unit is physically the same. It should look exactly the same as the photo, with the other kind having smoother edges, and different rods positions. 2003-2007 is this model. 2008+ is different.

 

 

 

 

 

 

4 reviews for Mazda 3 Door Lock Actuator Mechanism for 2003-2007 BK Hatch/Sedan (8N6A-A21812-G)

5.0
Based on 4 reviews
5
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4
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3
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1-4 of 4 reviews
  1. Anonymous
    Verified owner

    Part worked well

    (0) (0)
  2. Karina
    Verified owner

    Works very well , very happy

    (0) (0)
  3. JEREMIA NEWTON
    Verified owner

    Fits perfectly.

    (0) (0)
  4. Anonymous
    Verified owner

    Correct part, on-line instructions how to fit.

    (0) (0)
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This Part Fits the Following Vehicles:

Any car displayed below, is compatible with this part.

MakeModelYear
MakeModelYear
Mazda32003
Mazda32003 - 2007
Mazda32003 - 2007
Mazda32004 - 2007

FAQs

Most Frequent Questions and Answers

Parts Factory Australia shares installation tutorials on our YouTube channel. A video may not be available for your exact part or vehicle. Check the available tutorials or contact our team before starting installation.

Free express postage applies to Australian orders under 500g. Orders weighing 500g or more use free regular postage. Delivery estimates and any paid express upgrade are shown at checkout. See our shipping information for details.

Mazda 3 Door Lock Actuator, listed for BK · 2003-2007. Match the latch, connector, linkage and mounting holes. Confirm the body style and required position before ordering. Select the required option above; the selected variant must match your original component. Compare the original part and vehicle details; contact us before ordering if anything differs.

Australian orders under 500g receive free express postage. Orders weighing 500g or more receive free regular postage. Dispatch is from Queensland; availability and delivery estimates are shown at checkout.

Professional installation and retained receipts are required. Read the warranty terms for the cover, exclusions and claim process.

The Mazda 3 Door Lock Actuator Mechanism for 2003-2007 BK Hatch/Sedan (8N6A-A21812-G) comes with our 3-Year Unlimited Kilometre warranty, covering manufacturing defects and premature failure under normal use. We're Australian owned and operated, so warranty claims are handled locally — just contact our team with your order number and we'll sort it out.

Yes — if the Mazda 3 Door Lock Actuator Mechanism for 2003-2007 BK Hatch/Sedan (8N6A-A21812-G) doesn't fit your vehicle, you can return it for a refund or exchange within 7 days of receiving it, provided it's unused and in its original packaging. Just contact our team with your order number and we'll sort out the return quickly.

Position on vehicle: Drivers Front, Pair of Two Fronts, Passenger Front. Choose the required option above and check its price, availability and pictured components. Listed parent reference: 8N6A-A21812-G. References and included components may vary by option. Match the latch, connector, linkage and mounting holes. Confirm the body style and required position before ordering. Select the required option above; the selected variant must match your original component.

Our YouTube channel includes installation tutorials and parts guides. Check for your exact part and vehicle; not every application has a guide. The video on this page introduces our business.

Get a back-in-stock alert Enter your email and we’ll let you know when this part is available again.
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