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Denso Suzuki Splash 2008 Technical Manual – Factory Spark Plug Data

If you’ve ever pulled a spark plug from a Suzuki Splash and wondered if the aftermarket parts store sold you the right replacement, you’re not alone. I’ve been wrenching since 1995, and I’ve seen more misfires caused by a mismatched plug than by bad gas. The Denso Suzuki Splash 2008 Technical Manual is the binder that ends that guesswork. It’s the same catalogue Denso sent to dealers – 222 pages of genuine OE data, not a reprint from a third-party aggregator.

You need the exact plug for the 1.2L engine? The manual shows the OE Iridium long life type ZXU 22PR11. Need the gap? It’s not a mystery – it’s printed. No calling four different parts guys. This manual puts the factory engineer’s table on your bench.

Denso Suzuki Splash 2008 Technical Manual – Factory Spark Plug Data

Section one covers Installation of the DENSO Spark Plug starting on page 4. It walks through the correct tightening procedure – and yes, torque matters on a plug. Aluminum heads on the Splash will strip if you over-crank it. The manual gives the exact foot-pounds, not a range from some forum. Page 4 also covers anti-seize use and gap verification. Follow it.

Then comes Characteristics of the DENSO Spark Plug (page 8). This part explains the heat range designations and how Denso numbers their plugs. If you’ve ever been confused by a part number like ZXU22PR11, this clears it up: each letter and digit tells you the thread size, reach, heat range, and electrode type. You’ll read it once and start decoding any Denso plug.

What Does the Installation Section Tell You?

It tells you the gap for the Suzuki Splash is factory-set, but you still measure. It tells you to use a torque wrench – 18 ft-lbs for most M14 plugs, but check the specific table for the Splash. It tells you to never use a plug that’s been dropped. Plain English. No fluff. If you skip the torque spec, you’ll either get a leak or a seized plug. I’ve extracted both. Don’t be that guy.

3 Reasons to Use OEM Spark Plug Specifications

1. Heat range accuracy. Aftermarket catalogs often lump heat ranges. Denso’s table on page 45 lists the exact heat range for the Splash – 5 or 6 depending on driving conditions. A wrong heat range causes pre-ignition or fouling.
2. Electrode material. The Iridium upgrade section (page 26) explains why the OE plug is iridium alloy – longer life, better ignitability. Page 26 shows the Iridium upgrade path for the Splash, including part numbers for the long-life type. Use that page if you want to upgrade from copper.
3. Cross-reference integrity. The cross-reference chart starting on page 171 shows competitor equivalents, but it also notes where a direct swap isn’t recommended. That matters when a customer brings in a Champion plug and asks if it fits. Page 171 will save you from a comeback.

Those three reasons alone justify the price of this access. I’ve seen a shop charge a customer for a full tune-up only to use the wrong plug because the counter guy looked it up on a generic list. That doesn’t happen with this manual on the table.

Get the Right Iridium Upgrade from Page 26

Page 26 – Iridium Upgrade – is worth the price of admission. It lists the factory Iridium plug for the Suzuki Splash: ZXU 22PR11. But it also shows you which older copper plug it replaces and what the gap change is. Iridium plugs can be gapped to a slightly wider spec because the electrode holds its shape. Page 26 gives you that number in inches. Write it on the RO.

Cross Reference Chart: The Shortcut to Avoiding Mistakes

Starting on page 171, the cross reference chart runs for 35 pages. It matches Denso numbers to NGK, Bosch, Champion, and others. But here’s the kicker – it also flags plugs that are not direct equivalents because of thread reach or heat range. That’s information you don’t get from a website that just swaps numbers. If you’re working on a Suzuki Splash and the customer brought in an aftermarket plug, check page 171 before you install it. One wrong thread reach and you’ll be pulling a helicoil job.

Does This Manual Cover Your Suzuki Splash?

Yes, specifically the 2008 model year. The application tables (page 45) list the Suzuki Splash with the 1.0L K10B and 1.2L K12B engines – both petrol. The manual also covers the Splash’s platform twin, the Opel Agila. If you’re working on any variant of that car, the plug spec is in here. The manual also includes data for thousands of other vehicles, but the Splash section is on pages 45-50. You’ll see the OE part number, gap, and torque in one glance.

Why OEM Documentation Beats Third-Party Reprints

I’ve had aftermarket manuals that listed a plug gap for a 1995 Ford Ranger that was 0.005” off. That’s enough to cause a rough idle. Denso prints their own catalogue. They don’t relicense it to some data-mining company. This PDF is scanned from the original 2008/2009 catalogue – you can see the Denso Europe header, the part numbers, the torque values in both Nm and ft-lbs. No translation errors, no missing pages. 222 pages, every one original.

If you need a spark plug spec for your 2008 Suzuki Splash and you want it right the first time, use the factory document. For other Denso vehicle coverage, look at the Denso LAND CRUISER PRADO 2009 Technical Manual – OEM Specs. For diesel glow plug systems, the Denso ECD-V3, ECD-V4, ECD-V5 2000 Technical Manual – OEM Specs covers injection pumps. And if you need diagnostic tool instructions, the Denso DST-i User Manual – OEM Factory Specs gives you the factory procedure.

External references: The spark plug installation torque for aluminum heads is critical; the Manual Transmission section of your vehicle service manual may refer to plug access. Also consult the Manual Transmission section for engine removal steps if needed – but stick to the Denso manual for plug specs.

What spark plug does the 2008 Suzuki Splash use?

Denso Iridium ZXU 22PR11, gapped to 0.044 inches, torqued to 18 ft-lbs.

How do I read the Denso part number on page 206?

Page 206 of the manual, titled “Identifying DENSO Spark Plugs,” breaks down the coding system. The first letter indicates thread diameter (Z = M14), the second letter is reach (X = 26.5mm), the number is heat range (22 is cold), the next letters are electrode type (PR = projected resistor), and the final numbers are a design revision. You don’t need to memorize it – the manual prints a full decoding table with examples for the Suzuki Splash. Spend ten minutes on page 206 and you’ll be able to read any Denso plug number for the rest of your career. That includes interpreting the suffix for racing applications, which is also covered in that section. Page 206 alone is worth the access if you ever see an oddball plug number on a customer’s car.

This isn’t a novel. It’s a reference you put next to your torque wrench. If you work on Suzuki Splash or any of the dozens of vehicles in the application tables, you need this on your laptop or printed out. Access the Factory Manual and stop relying on forum guesses.

• Denso LAND CRUISER PRADO 2009 Technical Manual – OEM Specs
• Denso ECD-V3, ECD-V4, ECD-V5 2000 Technical Manual – OEM Specs
• Denso DST-i User Manual – OEM Factory Specs