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Suzuki 1.4L K14C Boosterjet Turbo Petrol Engine

Compact Performance with Modern Efficiency

The Suzuki K14C 1.4L Boosterjet Turbo Petrol engine is part of Suzuki’s K-series family, which has been a cornerstone of the brand’s small-displacement turbocharged engine lineup since its introduction in 2016. This powerplant was designed to replace the naturally aspirated K12B engines, offering improved efficiency, higher torque output, and modern emission compliance, while maintaining the compactness and reliability Suzuki engines are known for.


Built with a lightweight aluminium alloy block and an inline-four layout, the K14C incorporates advanced technologies such as direct fuel injection, turbocharging, and low-friction components to optimize fuel economy without compromising performance. The engine also features an integrated exhaust manifold and a twin-scroll turbocharger, allowing for rapid boost response and smooth torque delivery across the rev range. This combination of technologies provides a satisfying balance of power, fuel efficiency, and long-term durability, making it a popular choice in the UK replacement and reconditioned engine market.


Its versatility is highlighted by widespread applications in compact Suzuki models. Major compatible vehicles include the Suzuki Swift 1.4 Boosterjet, Suzuki Vitara 1.4 Boosterjet, Suzuki SX4 S-Cross 1.4 Boosterjet, and Suzuki Ignis 1.2/1.4 Boosterjet. These models benefit from the engine's responsive power delivery, compact packaging, and compliance with Euro 6 emissions standards, making it ideal for both city driving and longer motorway journeys.

Technical Specifications & Configuration

Engine Code
K14C
Engine Size
1373cc / 1.4 Litres
Cylinder Configuration
Inline 4 cylinder (I4)
Aspiration
Turbocharged (Boosterjet Turbo)
Fuel Type
Petrol
Injection System
Direct Injection
Valvetrain
DOHC - 16 valves with VVT
Compression Ratio
10.0:1
Cooling System
Water cooled
Block Material
Aluminium Alloy
Head Material
Aluminium Alloy
Emission Standard
Euro 6 (with DPF & EGR fitted)
Power Output Range
129 - 150 PS (model & market-dependent)
Torque Output
235 - 250 Nm
Turbo Configuration
Single Scroll Turbo
Fuel Economy (Est.)
45-55 MPG (varies by vehicle & driving style)

Common Configurations

  • Suzuki Vitara: 140 PS Boosterjet, 6-speed Manual / 6-speed Auto
  • Suzuki SX4 S-Cross: 140 PS Turbo, FWD & AWD options
  • Suzuki Baleno: 1.4L Turbo Petrol, 6-speed Manual, high fuel efficiency variant
  • Suzuki Ignis: Boosterjet 1.2L/1.4L crossover-style compact, mild hybrid in some markets
  • Suzuki Swift Sport: 140 PS Turbo, 6-speed Manual performance edition

Noteworthy Engineering Highlights

  • 🛠️Aluminium block: lightweight design for improved power-to-weight ratio
  • 🌍Boosterjet turbo: low-inertia turbocharger for rapid throttle response
  • 🧊Direct injection: high-pressure system for precise fuel delivery and efficiency
  • 🔄Balance shafts: reduce vibrations for smoother operation
  • ♻️Integrated EGR: lowers NOx emissions with optimized combustion

K14C, Boosterjet 1.4L

Common references: K14C, K14C-B, 1.4L Boosterjet, Suzuki 140 PS Turbo, Vitara Boosterjet, SX4 S-Cross Turbo, Swift Sport 1.4L, Baleno Turbo, Ignis Boosterjet

Types of Suzuki K14C Boosterjet Replacement Engines Available

Suzuki K14C Boosterjet Rebuilt Engines

High-performance rebuilds with OEM-grade pistons, gaskets & timing chains.

Suzuki K14C Boosterjet Remanufactured Engines

Every unit fully stripped and rebuilt to match factory tolerances.

Suzuki K14C Boosterjet Reconditioned Engines

Carefully inspected, cleaned, and restored by seasoned petrol engine specialists.

Suzuki K14C Boosterjet Replacement Engines

Direct-fit petrol engines ideal for quick swaps and no-hassle installations.

Suzuki K14C Boosterjet Refurbished Engines

Budget-friendly, tested units with clean internals and compression-verified heads.

Suzuki K14C Boosterjet Used Engines

Hand-selected from breakers and verified by our expert mechanics.

Compatible Models with K14C Engine

Suzuki Compatible Models

Suzuki Swift 1.4L Boosterjet Turbo Petrol Engine Compatibility K14C

Suzuki Swift
Suzuki Vitara 1.4 Boosterjet K14C Engine Compatible Model

Suzuki Vitara
Suzuki SX4 S-Cross 1.4L K14C Boosterjet Engine Compatibility

Suzuki SX4 S-Cross
Suzuki Ignis 1.2-1.4L Boosterjet Petrol K14C Engine Fitment

Suzuki Ignis

K14C Engine Applications


Suzuki Compact Hatchback Applications

Suzuki Logo
SWIFT 129-140HP
2017-2023
1.4L Boosterjet K14C Petrol
IGNIS 90-110HP
2017-2022
1.2L & 1.4L Boosterjet K12C / K14C

Suzuki SUV Applications

Suzuki Logo
VITARA 129-140HP
2015-2023
1.4L Boosterjet K14C Petrol
SX4 S-CROSS 129-140HP
2016-2022
1.4L Boosterjet K14C Petrol AWD/2WD

⚠️ Note: If you're unsure whether your vehicle has the K14C engine, simply enter your registration number above or contact our support team for a free compatibility check.

Common Suzuki K14C 1.4L Boosterjet Engine Problems & Solutions


Pricing, Warranty & Availability

Most Popular

Rebuilt Suzuki K14C Boosterjet Engine

From
£2,495
(Supply Only)
  • ✔ Fully Disassembled & Rebuilt
  • ✔ OEM-Grade Replaced Parts
  • ✔ Like-New Condition
  • ✔ 12-24 Month Warranty

Reconditioned Suzuki K14C Boosterjet Engine

From
£2,150
(Supply Only)
  • ✔ Professionally Reconditioned
  • ✔ Thoroughly Inspected & Tested
  • ✔ Restored to OEM Standard
  • ✔ 12 Month Warranty
Cheapest Option

Used Suzuki K14C Boosterjet Engine

From
£1,450
(Supply Only)
  • ✔ Basic Inspection
  • ✔ Compression Tested
  • ✔ Known Service History
  • ✔ 30 Days to 3 Month Warranty

Refurbished Suzuki K14C Boosterjet Engine

From
£1,900
(Supply Only)
  • ✔ Partial Overhaul
  • ✔ Key Component Replacement
  • ✔ Cost-effective Option
  • ✔ 3 to 6 Month Warranty

📦 Stock Availability & Delivery Time

  • 🔄 High availability across UK suppliers
  • 🚚 Next-day delivery on in-stock units (supply only)
  • 🛠️ 7-10 day turnaround for rebuilt units
  • 📦 Free UK mainland delivery (select suppliers)

⭐ What You Get With Every Suzuki K14C Boosterjet Engine

  • 🧰 OEM-quality rebuilds using manufacturer-approved parts
  • 🔎 Full inspection reports w/ compression & leak-down tests
  • 📋 Engine serial & block codes verified
  • 💬 UK-based support before & after sale
  • 🔄 Exchange options for faulty units
  • 🧾 Simple returns & warranty claims

Suzuki K14C Boosterjet Engine Reconditioning Process


STEP 1 1 Day

Initial Inspection & Diagnostic Reporting

  • Visual & Dimensional Checks: Deck flatness, bore wear, and head warpage.
  • Oil & Coolant Analysis: Detect fuel dilution, glycol traces, or contamination.
  • Compression Testing: Verify ring and valve sealing before teardown.
STEP 2 1-2 Days

Complete Strip Down & Component Cleaning

  • Media Blast Cleaning: Remove carbon & sludge from internals.
  • Chemical Degreasing: Clean oil pump, HPFP, and turbo cores.
  • Part Identification: Catalog rods, pistons, and cams for traceability.
STEP 3 2-3 Days

Non-Destructive Testing & Machining

  • Crack Testing: Magnaflux and dye penetrant for structural faults.
  • Boring & Honing: Re-bore cylinders and hone for correct finish.
  • Crank Grinding: Undersize grind and dynamic balance.
  • Surface Milling: Flatness to <0.03mm deviation.
STEP 4 1 Day

Component Replacement with OEM Parts

  • Pistons & Rings: Forged internals matched to rebored block.
  • Timing Kit: New chain, guides, tensioner, sprockets.
  • Seals & Gaskets: All major gaskets and seals replaced.
  • Water & Oil Pump: New OEM pumps with updated specs.
STEP 5 1 Day

Assembly & Torque Angle Verification

  • Sequential Torque: Head & main bolts torqued to spec.
  • Phaser Setup: Cam phasers installed and OCVs verified.
  • Injector Setup: Calibrated with precision flow test bench.
STEP 6 1 Day

Hot Bench Dyno & Road Simulation

  • Cold Start Test: Oil pressure and tensioner function verified.
  • Load Simulation: Urban/motorway load profiles checked for leaks and stability.
  • Compression & Emissions: Ring seal and smoke tested before dispatch.
Suzuki K14C Boosterjet Turbo Petrol Engine - Engine Finders

Why Choose Engine Finders for Suzuki K14C 1.4L Boosterjet Turbo Petrol Engine?

At Engine Finders, we don’t just sell engines - we deliver peace of mind. Here’s why Suzuki owners across the UK trust us:

  • ✔ Trusted UK Suppliers

    We work exclusively with vetted UK suppliers who specialize in Suzuki engines - no middlemen, no guesswork.

  • ✔ Save Up to 60% vs Dealership

    Why overpay? Compare quotes from multiple sellers & save up to 60% on Suzuki replacement engines, get top-tier quality for less.

  • ✔ Tested & Certified Engines

    Every Suzuki K14C engine is thoroughly tested for durability and performance, backed by a 6-24 month warranty.

  • ✔ Fast Quotes & Faster Delivery

    Quick quotes, nationwide delivery, and optional vehicle recovery, get your Suzuki back on the road in no time.

  • ✔ Expert Suzuki Support

    Need help? Our friendly Suzuki specialists guide you through engine compatibility, specs, and installation process.

  • ✔ Suzuki K14C Boosterjet Specialists

    From Swift to Vitara, we offer all variants (129PS / 140PS / 150PS).

  • ✔ Performance Matched with Experience

    Our remanufactured and reconditioned engines often meet or exceed OEM specs - ready for both city and highway driving.

  • ✔ We Work for You - Not the Suppliers

    We’re 100% on your side, helping you choose the best engine deal instead of just pushing supplier specials.

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Frequently Asked Questions - Suzuki K14C 1.4L Boosterjet Turbo Petrol

How reliable is the Suzuki K14C 1.4L Boosterjet engine?

The K14C Boosterjet engine is generally reliable, with many owners reporting smooth performance beyond 100,000 miles. Common wear items include turbocharger seals and high-pressure fuel injectors. Regular servicing, using **Suzuki-approved 0W-20 or 5W-30 synthetic oil**, and avoiding prolonged short trips helps maintain long-term reliability.

What are the typical maintenance intervals for the K14C 1.4L?

Suzuki recommends an **oil and filter change every 10,000 miles or 12 months**, whichever comes first. Spark plugs should be inspected or replaced at 40,000 miles, while air filters and fuel filters are recommended every 20,000–30,000 miles. Turbocharger and intercooler hoses should be checked for leaks at every service.

Are there known issues with the K14C turbo?

Some K14C engines may experience **turbocharger actuator sticking or oil seal leaks** after 60,000–80,000 miles. Symptoms include reduced boost, whining noises, or smoke on acceleration. Immediate inspection and cleaning of the actuator, or replacement of worn seals, can prevent more serious turbo damage.

What type of fuel and oil should I use for the K14C engine?

The K14C 1.4L Boosterjet is designed for **premium unleaded petrol (RON 95 or above)**. For oil, use **synthetic 0W-20 or 5W-30** meeting Suzuki’s specifications. Correct fuel and oil help maintain turbo longevity, efficient combustion, and low engine deposits.

Can the K14C engine handle tuning or remapping?

Remapping or tuning the K14C can increase performance, but it **significantly raises stress on the turbo, high-pressure fuel pump, and pistons**. Warranty may be voided, and improper remaps risk early turbo failure or excessive carbon buildup. Always use a reputable tuner and consider upgraded intercooler or exhaust components.

How much does a replacement or rebuilt K14C engine cost in the UK?

A brand-new Suzuki K14C engine typically costs **£3,500–£4,500**, while a remanufactured unit ranges from **£2,200–£3,200** including core exchange. Labour varies depending on engine bay access and turbo components. Many workshops offer partial rebuilds or cylinder-head only replacements to reduce costs.

Does the K14C engine have issues with carbon buildup?

Direct injection in the K14C can lead to **intake valve carbon deposits** over 60,000–80,000 miles, causing rough idle or reduced throttle response. Regular long motorway drives and occasional intake cleaning or walnut blasting prevent significant buildup. Avoid excessive short urban trips to reduce deposit formation.

Is the K14C engine suitable for hybrid or mild hybrid Suzuki models?

Yes, Suzuki uses the K14C engine in some mild hybrid configurations, pairing it with a 48V electric motor to improve fuel efficiency. The engine management system integrates start-stop, regenerative braking, and electric boost support without affecting standard service intervals.

What is the expected fuel economy for the 1.4L Boosterjet?

Official figures for combined driving range around **45–50 mpg (UK)** depending on model and gearbox. Real-world consumption may vary from **38–48 mpg** depending on driving style, turbo use, and load. Regular servicing and maintaining correct tyre pressures help achieve optimum economy.