TR5AI-13 NGK Spark Plug | Genuine NGK Spark Plug

🔧 Product Description

NGK Iridium Spark Plug – Part Number: TR5AI-13

⚙️ Key Features

• Fine iridium-tipped centre electrode and platinum-tipped ground electrode for a slow wear rate, stable idle, improved fuel efficiency and lower emissions
• Longer service life
• Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
• Corrugated ribs reduce the risk of flashover
• Pure alumina silicate ceramic insulator, providing superior strength and better heat transfer
• Triple seals prevent leakage
• Copper core aids in heat removal

📏 Specifications

• NGK stock number: 90813
• Thread: 14 mm x 1.25 mm
• Reach: 18 mm (.709 in)
• Hex: 16 mm (5/8 in)
• Seat: Tapered
• Gap as supplied: 1.3 mm (.050 in)
• Heat range: 5
• Resistor: Yes
• Centre electrode: Iridium
• Ground electrode: Platinum, fine wire

🚘 Application

Listed in our NGK spark plug application charts for MerCruiser, Mercury and Chrysler inboards and Crusader, Indmar, PCM and other inboards as the iridium upgrade for engines that take the PTR5D-10 and PTR5D-13. The gap is not the same on all of them - our chart lists between 1.0 mm and 1.5 mm depending on the engine, so check the line for yours.

• MerCruiser Stern Drive 8-Cyl. – 350 Mag MPI Gen+ Horizon
• Crusader GM Engines – 5.0, 5.0L MP, V8 275 hp (2005 on)
• Indmar 8-Cyl. GM Big Block – 6.0, 6.0L, V8 (2003-2005)
• MerCruiser Stern Drive 6-Cyl. – 4.3, 4.3L MPI Gen+ (1998 on)
• Crusader GM Engines – 5.7, 5.7L Carb., V8 300 hp
• Indmar 8-Cyl. GM Big Block – 8.1, 8.1L Vortec, MPI (2003-2005)
• MerCruiser Chevrolet – 496 Mag (Incl. HO)
• Crusader GM Engines – 5.7, 5.7L MP, V8 220 hp (2005 on)
• Indmar Cadillac 279 cu.inch – 4.6, 4.6L Northstar, MPI
• MerCruiser Stern Drive 8-Cyl. – 5.0, 5.0L MPI (2002 on)
• Crusader GM Engines – 6.0, 6.0L MP, V8 375 hp
• Indmar 5.7
• MerCruiser Small Block – 5.7, Black Scorpion 5.7L (2000-2006)
• Crusader GM Engines – 8.1, 8.1L MP (HO), V8 425 hp
• MerCruiser Small Block – 6.2, Black Scorpion MX 6.2 (2000-2006)
• Crusader GM Engines – 8.1, 8.1L MP, V8 385 hp
• MerCruiser Small Block – 6.2, MX 6.2 MPI Horizon (2000-2006)
• MerCruiser Small Block – 6.2, MX 6.2 MPI (2000-2006)
• MerCruiser Stern Drive 8-Cyl. – 6.2, MX 6.2 MPI, Horizon V: 0M 320 614 on
• MerCruiser Big Block – 8.1, 8.1S HO, Horizon (2000-2006)

That is the 20 most common of 22 applications our chart lists for this plug - there are further engines in NGK's catalogue, so ask us to check yours.

🔄 Supersession & Cross Reference

NGK's cross-reference tables list this plug against these part numbers.

• Bosch: 0 242 225 659, HR9KII33Y
• Mazda: L303 18 110, L845 18 110
• Volvo: 31 411 394

📦 Condition

• Brand new genuine product
• Supplied in original packaging