Get the code right before the rebuild starts. SHY6 is a 2.2-litre SkyActiv-D with a cited 150 hp / 380 Nm record in CX-5 KF applications, grouped with SHY8 — and the output figures belong to the specific record, not to both codes. A rebuild should confirm the code, build to your vehicle's configuration, and document measurement, machining and testing. No records, no deal.
MAZDA REPLACEMENT ENGINES • UK
Reconditioned SHY6 Engines (2.2 SkyActiv-D) — Rebuilding the Right Code, Not the Group
A reconditioned SHY6 engine has to be rebuilt as a SHY6 — not as “the 2.2 diesel”. This code sits grouped with SHY8 in CX-5 KF records, and that's exactly where rebuilders and buyers go wrong. Here's what a proper SHY6 rebuild includes, what records should prove it, and how to compare quotes for a CX-5 (KF, 2018–2021 cited) without inheriting someone else's specification.
Find the right engine for your Mazda
✓ Used & reconditioned✓ Supply or fitting✓ Compare quotes
What should a SHY6 rebuild actually specify?
A rebuilt SHY6 must return as a 2.2-litre (2,191 cc) SkyActiv-D built to your vehicle's specification — with the cited 150 hp / 380 Nm record in mind, not SHY8's. Because the two codes are grouped in the same CX-5 KF period, the builder should confirm the exact unit identity before touching a tool.
Which Mazda does a reconditioned SHY6 suit?
Reviewed records place SHY6 in the CX-5 KF (2018–2021 cited), grouped with SHY8. Before quoting, a serious rebuilder confirms your derivative against the block code, Reg — and keeps SHY8 evidence out of your build.
Keep the codes straight with the SHY6 identification guide, the SHY1 guide for the 150 PS sibling, and the CX-5 model hub.
| Model | Generation / body | Engine | Output | Evidence status |
|---|---|---|---|---|
| Mazda CX-5 | KF (2018–2021 cited) | 2.2 SkyActiv-D | 150 hp cited (SHY6 record) | Reviewed record — grouped with SHY8 |
| UK derivatives | — | — | — | Still to confirm — check the code against your Reg and Mazda EPC |
What should a SHY6 rebuild put right?
This application carries the family's carbon build-up and oil dilution themes, plus recorded EGR cooler attention. A rebuild should be measurement-led:
Family context lives in the engine directory.
What was measured, machined and replaced — itemised, not summarised.
What was done about EGR and cooling while the engine was apart.
What testing was completed before sealing.
Reconditioned, used or supply-and-fit — which route for a grouped code?
For a grouped code, documented work matters even more. Reconditioned gives you a defined build; tested used gives you a documented donor; supply-and-fit wraps the job into one quotation. All three are viable — the paperwork decides.
01
Used Engine
- What it is
- A complete donor unit, tested before sale
- Best for
- Faster, cheaper routes with honest donor history
- What to compare
- Mileage records, donor Reg, compression and running-test evidence
- What it is
- A complete unit stripped, measured, machined and rebuilt
- Best for
- Owners keeping the car long-term
- What to compare
- Machining and measurement records, replaced-parts list, test results
03
Supply & Fit
- What it is
- Engine, removal, installation and commissioning in one quotation
- Best for
- One-responsibility jobs where downtime matters
- What to compare
- Written component schedule, fitting plan, warranty split and handover
UK's Most Requested Engines — Based on 5,760+ Real Quotes (Last 90 Days)
These are the engines UK drivers ask us about most, ranked by real enquiry traffic through our network — useful context when you're weighing how much homework your engine deserves.
1
Most requested
Mazda 6 2.2 SkyActiv-D Engine SH-VPTR / SHY family
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: Mazda 6
Engine option: SH-VPTR / SHY family
Top UK demand — the diesel most often researched for replacement
Seller from trusted UK supplier network
2
Mazda CX-5 2.2 SkyActiv-D Engine SHY1 / SHY4 / SHY6
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: CX-5
Engine option: SHY1 / SHY4 / SHY6
High demand; output and code vary by year
Seller from trusted UK supplier network
3
Mazda 3 2.0 SkyActiv-G Engine PE-VPS
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: Mazda 3
Engine option: PE-VPS
Volume petrol with several applications
Seller from trusted UK supplier network
4
Mazda CX-3 1.5 SkyActiv-D Engine S5-DPTR
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: CX-3
Engine option: S5-DPTR
Steady CX-3 DK diesel demand
Seller from trusted UK supplier network
5
Mazda 2 1.5 SkyActiv-G Engine P5-VPS
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: Mazda 2
Engine option: P5-VPS
Small-car petrol volume
Seller from trusted UK supplier network
6
Mazda MX-5 1.5 / 2.0 SkyActiv-G Engine
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: MX-5
Enthusiast-driven demand
Seller from trusted UK supplier network
7
Mazda CX-60 3.3 e-Skyactiv D Engine T3Y4
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: CX-60
Engine option: T3Y4
Newest diesel; near-new donor market
Seller from trusted UK supplier network
8
Mazda CX-30 2.0 SkyActiv-G Engine PE-VPS / PEX family
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: CX-30
Engine option: PE-VPS / PEX family
Growing volume
Seller from trusted UK supplier network
9
Mazda BT-50 3.2 Duratorq diesel Engine P5-AT
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: BT-50
Engine option: P5-AT
Commercial workhorse demand
Seller from trusted UK supplier network
10
Mazda 2.5 SkyActiv-G Petrol Engine
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: CX-5, Mazda 6, CX-30, Mazda 3
Higher-capacity petrol
Seller from trusted UK supplier network
How do you vet a SHY6 rebuild before you pay?
Code identity: the unit is SHY6, built for your CX-5 KF derivative.
Build records: measurement and machining sheets with tolerances.
Parts and EGR work: named replacements, including cooling/EGR items.
Test evidence: assembly and run-up results.
Warranty: written terms with exclusions.
SHY6 rebuild questions
Will a rebuilder treat SHY6 and SHY8 as the same engine?
They shouldn't. The codes are grouped in the same CX-5 KF record period, but the output figures and evidence belong to specific records. A proper build confirms the exact code first.
What should a SHY6 rebuild include for EGR?
Ask directly: what was inspected, cleaned or replaced on the EGR and cooling side, and how it was documented. That work separates a thorough rebuild from a basic one.
Can you rebuild a SHY6 with oil-dilution history?
Yes — with the cause assessed and addressed. Ask what was measured and how the dilution history was evaluated before the build went ahead.
How do I know the rebuild is for my car?
The build should be confirmed against your REG, Reg and the block code — and the records should name your configuration, not just the engine family.
READY FOR THE NEXT STEP?
Check My Registration →Get reconditioned SHY6 quotes for your CX-5
Send your registration and compare rebuild quotations with the records attached — then judge the paperwork. For official specifications and service documentation, cross-check against official documentation — source: Mazda UK's official resources.
Reviewed Mazda engine guidance
Reviewed by the MazdaReplacementEngines technical team against Mazda owner documentation and OEM-linked application records.