Ferrari 308 GTSi Parts & Accessories

Ferrari 308 GTSi Parts & Accessories

The Ferrari 308 GTSi is the fuel-injected Targa variant of the 308 platform, produced from 1980 onward alongside the 308 GTBi berlinetta and fitted with the same Bosch K-Jetronic mechanical fuel injection system that replaced the original Weber carburetors across the 308 lineup. Owners of the GTSi work with a unique combination of the GTS Targa body structure and the injection-specific fuel and intake hardware, meaning correct parts sourcing requires identifying both the body variant and the engine specification. The GTSi is particularly popular with drivers who want open-air classic Ferrari ownership with the more relaxed maintenance demands of a fuel-injected engine compared to carburetor-equipped cars in stop-and-go traffic. Keeping the K-Jetronic system in proper calibration is the central maintenance challenge for GTSi ownership, and correct replacement parts make that task straightforward.

Popular Upgrades

Bosch K-Jetronic fuel distributor components, warm-up regulator rebuild kits, and fuel injector cleaning and rebuilding services are the most commonly sourced items for GTSi injection system maintenance. Timing belt replacement kits, water pump assemblies, and cam cover gaskets are essential for any Tipo F106 V8 reaching its service interval regardless of injection or carburetor specification. Targa roof panel seals, door and hood rubber seals, and B-pillar hardware are body-specific items that need periodic replacement to prevent water intrusion and maintain the weather-tightness of the open-top body structure. Brake caliper rebuild kits, braided lines, and suspension bushings complete the service parts picture for GTSi owners preparing for driving events or returning cars to regular use after storage.

Performance and Handling

The 308 GTSi combines the handling balance of the mid-engine 308 chassis with the more consistent power delivery of the Bosch fuel injection system, which meters fuel more precisely than the Weber carburetors under variable driving conditions. The injection system's cold-start enrichment circuit provides more reliable starting in cold climates than carburetors, which appeals to owners who drive their GTSi year-round rather than seasonally. Suspension refresh work on the double-wishbone front and rear geometry restores the steering feedback and lateral grip that time and mileage erode through bushing degradation, and properly aligned camber and toe settings make a measurable difference in tire wear and corner-entry confidence. Combined with rebuilt brake calipers and fresh Ferodo friction pads, a freshened GTSi chassis delivers a driving experience that rewards skilled drivers on both touring routes and track days.

How does the fuel injection system on the 308 GTSi differ from a carbureted 308 GTS?

The carbureted 308 GTS uses four Weber 40 DCNF carburetors that mix fuel and air mechanically at each intake runner, requiring periodic synchronization, jet cleaning, and float level adjustment to stay in tune. The GTSi's Bosch K-Jetronic system uses continuous injection controlled by a mechanical fuel distributor that responds to throttle position and air flow, eliminating carburetor synchronization work but introducing hydraulic components that require their own maintenance. Most specialists find that a well-maintained K-Jetronic system is more consistent in everyday driving than carburetors, while enthusiasts who prioritize throttle response on track often prefer the immediacy of the Weber setup.

What is the most common fuel system problem on the 308 GTSi?

The fuel accumulator and check valve are the most common failure points on aging K-Jetronic systems, since these components maintain residual fuel pressure after the engine is shut off to enable hot restarts. When the accumulator fails, fuel pressure bleeds down quickly and the engine requires extended cranking to restart after being left for even a short period, which many owners initially mistake for a fuel pump failure. Replacing the accumulator and pressure regulator as a pair during a fuel system service restores hot-restart performance and eliminates the characteristic hard-start complaint associated with aging GTSi injection systems.

Why These Parts Fit Right

Parts in this collection address both the GTSi's Targa body structure and its K-Jetronic injection system, with clear fitment notes to distinguish GTSi-specific items from those shared with the GTBi berlinetta. Vehicle-specific compatibility information helps owners confirm the correct part before ordering. Orders ship quickly from stocked inventory so your service work is not delayed by long lead times.

Complement your GTSi service with options from our exhaust collection, source suspension components from our suspension collection, and find intake-related hardware in our air intake systems collection.