Spark Plug for 1999 Saab 9-3 & More - NGK 5691

NGK 5691 spark plug for the 1999 Saab 9-3 4-cylinder 2.0L and other vehicles ignites the air-fuel mixture in each cylinder. As one of the NGK iridium spark plugs in the Iridium IX line, it suits modified or high-performance applications, or as an upgrade from OE nickel alloy spark plugs.

• NGK Iridium IX line with single iridium metallurgy
• Fine-wire 0.6 mm iridium tip on the center electrode for durability and a stable spark
• Iridium alloy with a density six times that of platinum and a very high melting point
• Tapered cut ground electrode with a reduced-quenching design for ignitability, acceleration and fuel efficiency
• Solid copper core of 98% pure copper for heat dissipation and conductivity
• Trivalent metal plating that resists corrosion and seizing and eases installation and removal

Quick facts

• Part: NGK 5691 spark plug
• Fits: 1999 Saab 9-3 4-cylinder 2.0L and other vehicles
• Condition: New

Hard starting, a rough idle, a misfire or weak acceleration can come from worn plugs, though a bad coil or a fuel problem can also produce them. Before replacing, look at the electrodes and ceramic with the engine off and cool, and measure the gap against the spec below.

Fits

It fits the 1999 Saab 9-3 4-cylinder 2.0L, the 1989-1990 Saab 9000 4-cylinder 2.0L, the 1990-1998 9000 4-cylinder 2.3L and the 1994-1998 Saab 900 4-cylinder 2.0L. Four plugs go into each engine.

Specifications

Interchange: BCPR7EIX-11