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Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →The 2004–2007 Saturn Ion Red Line stood out because it combined a factory-supercharged engine and performance-focused manual transmission with track-developed chassis and brake changes. Recaro seats, performance tires, driver-oriented details, and distinctive Quad Coupe styling completed a package that went well beyond a badge and body kit.
1. A factory-supercharged Ecotec engine
Saturn rated the Red Line’s 2.0-liter, intercooled, supercharged four-cylinder at 205 hp at 5,600 rpm and 200 lb-ft of torque at 4,400 rpm. Those are manufacturer figures from Saturn/GM development material published in 2003, not independent road-test measurements. The 2007 brochure mirror describes an Eaton helical Roots supercharger, an air-to-water intercooler, and 12 psi of boost. 2007 Saturn Ion brochure (mirror)
2. A five-speed manual with performance in mind
The Red Line paired its supercharged engine with a close-ratio five-speed manual. Saturn said the transmission had increased torque capacity, and the short-throw shifter was refined during track work. That combination made the driver part of the powertrain experience rather than leaving the engine to work through an automatic. Saturn/GM development account
3. Track work informed the production car
Saturn and GM Performance Division used the Nürburgring and U.S. road courses to develop the Red Line’s powertrain, chassis, and brakes. The development account says an early mule completed more than 100 hard laps on its first outing. That history helps explain why Saturn discussed details such as shifter travel, pedal feel, and suspension tuning—not just engine output. Saturn/GM development account
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#1 Best Overall
- Perfect replacement - reverse engineered to look, fit and function exactly like the original door mirror on your vehicle's specific year, make and model
- Complete assembly - includes same mirror glass, housing, bracket and technology as the original part that came on the vehicle
- Cost-effective and reliable - functions similarly to the original part but is much less expensive than getting a replacement from the dealership or original manufacturer
- Easy installation - no special tools or equipment is necessary for installing this new part
- Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool
4. Suspension changes beyond appearance
The Red Line received stiffer springs, a larger stabilizer bar, firmer shock valving, upgraded front struts, and a firmer rear trailing-link bushing. Period Saturn material also says its ride height was lowered by 10 mm. Together, those hardware changes set it apart from an Ion with only cosmetic add-ons, though a firmer setup can trade some ride comfort for tighter body control.
5. Larger four-wheel disc brakes
Saturn’s development description specifies 11.6-inch vented front rotors and 10.6-inch rear discs, heavy-duty calipers, and standard ABS. These are period manufacturer specifications; they describe the hardware, not a current braking comparison against newer cars. Saturn/GM development account
Rank #2
- Perfect replacement - reverse engineered to look, fit and function exactly like the original door mirror on your vehicle's specific year, make and model
- Complete assembly - includes same mirror glass, housing, bracket and technology as the original part that came on the vehicle
- Cost-effective and reliable - functions similarly to the original part but is much less expensive than getting a replacement from the dealership or original manufacturer
- Easy installation - no special tools or equipment is necessary for installing this new part
- Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool
6. Forged wheels and performance tires
Period specifications paired 17-inch forged alloy wheels with 215/45R-17 Dunlop Sport SP9000 performance tires. The tire model and fitment are historical details, not a claim about present-day availability. If choosing replacement tires now, confirm the car’s wheel setup, the correct size, load and speed ratings, and vehicle fitment rather than assuming an old model remains available.
7. Engine hardware and intercooling for the supercharged setup
The 2007 brochure mirror lists a high-capacity intercooler arrangement and strengthened engine components, including a forged-steel crankshaft and connecting rods, plus oil-jet-cooled pistons. These details are specific to that brochure’s model year; they should not automatically be treated as identical specifications for every Red Line year. For service or parts research, match documentation to the car’s model year and supercharged engine. GM’s 2004 owner’s manual distinguishes the 2.0-liter supercharged engine and its five-speed manual from other Ion powertrains. 2007 Saturn Ion brochure (mirror) · 2004 Saturn Ion owner’s manual
Rank #3
- [Vehicle Fitment]: Compatible with Saturn Ion 2006 2007 L4 2.2L/L4 2.4L --- The Size is 11.97"x7.72"x1.38"; It only fits 4-Door vehicles, doesn't fit 2-Door vehicles
- [Reference Number]: CA9875, AF4007, A4007, PA5783, A35783, 15893542, 49054, AF1373, LX3077, 1433503
- [Specifications]: ① Location: Front; ② Length: 11.97 inch; ③ Width: 7.72 inch; ④ Height: 1.38 inch; ⑤ Shape: Rectangular; ⑥ Washable: No; ⑦ Reusable: No; ⑧ Package Quantity: 1; ⑨ Packaging Type: Box
- [Enhanced Performance]: A-Premium Engine Air Filter uses fine filtration media to capture all kinds of debris without obstructing airflow, removing dangerous particles, improving engine performance and increasing engine efficiency
- [Replacement Suggestion]: To ensure that the engine air filter provides your engine with clean air, recommended replacement every 12 months, 12,000 miles or as specified by the vehicle manufacturer.
8. Recaro front seats with more lateral support
Saturn called out the Red Line’s Recaro front seats for their increased lateral support. That support suited the car’s performance intent by helping occupants stay in place during cornering, rather than treating the interior as an unchanged economy-car cabin.
9. Driver-focused controls and pedal placement
A four-spoke steering wheel and sport pedals added to the Red Line’s cockpit changes. Saturn says track sessions informed pedal placement for heel-toe shifting and revisions to brake-pedal feel. Those details matter most to drivers using the manual transmission actively; they are evidence of a deliberate driving position, not a claim that every driver will prefer the setup.
Rank #4
- FITMENT- For 2003-2007 For Saturn ION.
- SUPERIOR QUALITY - Direct replacement automotive side view mirror is an economical and quality alternative to the OE mirror assemblies.
- DESIGN- Extensive engineering was designed to reduce vibration of the glass while vehicle is in motion.
- IMPORTANT NOTE- This mirror is designed to replace an original mirror with these exact options. If you do not have the options listed, there is a possibility that this mirror may not function properly.
- PACKAGE LIST - 1pcs LH (Driver Side) side view mirror.
10. Quad Coupe styling with practical Ion details
Unique front and rear fascias and rocker moldings gave the Red Line a more purposeful look. The car also retained the Ion Quad Coupe’s dual rear access doors and dent-resistant polymer body panels, features described in period launch coverage. The styling therefore added a distinct identity without discarding the Ion’s unusual everyday-access and body-panel characteristics. Cars.com period coverage
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What the 2007 brochure’s performance figures mean
The 2007 Saturn brochure mirror lists 0–60 mph in 6.2 seconds, a quarter-mile in 14.7 seconds, 0.85 g on the skid pad, and a 60–0 mph stopping distance of 119 feet, identified as based on GM testing. These are brochure-reported results, not current independent measurements or a promise of what every surviving car will achieve. Vehicle condition, tires, surface, and test conditions can affect real-world results. 2007 Saturn Ion brochure (mirror)
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- COMPATIBLE WITH (2005-2010 CHEVROLET COBALT 2.2L and 2.4L DOHC MODELS) (Will NOT fit models with air injection)
- COMPATIBLE WITH ( 2007-2010 PONTIAC G5 2.2L 2.4L DOHC MODELS) (Will NOT fit models with air injection)
- COMPATIBLE WITH ( 2005-2007 SATURN ION 1, 2, 3, 2.2L and 2.4L DOHC MODELS) (Will NOT fit models with air injection)
Why it was more than a trim package
The Red Line’s distinction came from the way its parts worked as a package: a supercharged engine and strengthened manual transmission, chassis and brake revisions, performance tires, supportive seats, and track-informed driver controls. Its styling made that intent visible, but the hardware underneath is what made the Ion Red Line a genuine performance variant.
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