Description

Lotus S4, Esprit Turbo, Sport 300 Parts Catalog – 1899 Pages of OEM Factory Data

I’ve torqued head bolts on everything from a ’72 Datsun to a modern V-8 Lotus, and let me tell you: the difference between a factory parts catalog and something a third-party slapped together is the difference between a bolt that holds and a bolt that snaps at 70 mph. This is the real deal – Lotus S4, Esprit Turbo, and Sport 300 Parts Catalog, original OEM print, scanned at high resolution. 1899 pages of part numbers, exploded views, and the kind of detail that keeps you from ordering a left-side brake caliper bracket when you needed the right-side one.

This catalog covers the S4, the Esprit Turbo, and the Sport 300 – all the turbocharged Lotus models from the early 90s through the V-8 era. The table of contents alone is a roadmap: Body Structure, Glazing, Exterior Hardware, Brakes, Steering, Engine, Transmission, and more. Page 4 lists the full body structure breakdown, including separate sections for the S4 and Sport 300 bumpers, sills, and spoilers. If you need a part number for a Sport 300 rear valance, that’s where you start.

What’s Inside This 1899-Page Parts Catalog

You get the complete factory parts breakdown for every major system. Sections like 10.00 Body Structure, 11.00 Glazing & Door Weatherstrips, 12.00 Exterior Hardware & Trim, 13.00 Seats and Seat Belts, 14.00 Pedal Box & Fascia, 15.00 Interior Trim, 17.00 Electrical, 18.00 Heater/Air Conditioning, 19.00 Labels & Literature, 30.00 Chassis, 31.00 Suspension, 32.00 Steering, 33.00 Brakes, 34.00 Wheels & Tires, 40.00 Engine, 41.00 Belts & Pulleys, 42.00 Induction System, 43.00 Emission Equipment, 44.00 Fuel System, 45.00 Exhaust System, 46.00 Cooling System, 47.00 Transmission, 60.00 Tools, 80.00 Bulk Items. Each section has its own sub-index with part numbers and illustrations. This is not a service manual – it’s a parts catalog, meaning every nut, bolt, gasket, and bracket is listed with its factory number.

Braking System: ABS IIIA Diagnostics and Brake Component Breakdown

One of the trickiest subsystems on these cars is the Delco ABS IIIA. The catalog includes the full Braking System (Delco) section (JF.25) with component locations, system operation, circuit operation, and a trouble code diagnosis table. Page 8 walks you through the pre-diagnosis inspection – including a warning about the hydraulic accumulator holding high-pressure brake fluid. You disconnect a line without bleeding that accumulator down, you’re getting a face full of brake fluid and a trip to the ER. The catalog lists every part: ABS controller, front and rear enable relays, solenoids, wheel speed sensors, brake switch, pump motor circuit, and the lamp driver module. Need to pull a trouble code? Codes like A033 (Brake switch Open) and A055 (ABS Controller internal voltage fault) are listed with page references. This is the kind of data that keeps you from guessing which relay to replace.

Audience: Who Needs This Catalog?

If you’re a home garage mechanic trying to rebuild a wrecked Esprit Turbo, or a specialist shop that sees two or three Lotus cars a year, this catalog saves you the phone calls to dealers who don’t have microfiche readers anymore. You get the exact part numbers for everything from a door mirror (Section 12.09A) to the fuel filler flap release mechanism (Section 12.02A). For the Sport 300, the bumpers and valances are listed separately from the S4 – critical because those parts are not interchangeable. The catalog also covers the V-8 models (1993-96) as shown in the OCR excerpt: “Turbo 93-96” and “V-8 Parts” sections. If you’re swapping a V-8 engine into an S4 chassis, this catalog tells you what mounts and brackets you need.

Related manuals you might need: Lotus Elise Service Notes Manual 1996 for the later chassis, or Lotus Elise Service Notes: Brake System & Pedal Box (Section JI) for brake hydraulic details. For the earlier Lotus turbo cars, check Lotus Elan Turbo Service Manual – different engine, but same era of Lotus engineering.

Source Validity: OEM Factory vs. Aftermarket Reprints

I’ve seen aftermarket parts catalogs that list “generic brake pad” for a Lotus – that’s useless. This is the original Lotus factory document, scanned from the same binder that dealership parts departments used. The part numbers are stamped with Lotus’s own coding, not reinterpreted by some third-party data entry guy in a cubicle. The file name is Lotus_S4-Esprit_Turbo-Sport_300_Parts_Catalog_en-38714017198.pdf – that’s the factory part number. When you’re ordering a brake caliper rebuild kit, you need the exact number from this catalog, not a guess. The ABS section (JF.25) is pulled directly from the Delco service documentation, with the same figures and schematics the factory used. For a broader look at the automotive industry and how these systems evolved, see Automotive Industry Overview. For battery and electrical system specifics, Automotive Battery gives background on the components you’ll find in Section 17.00 Electrical.

Does this catalog cover the Esprit Turbo and Sport 300 models?

Yes.

What about the ABS system? Is there a separate section?

The catalog includes a dedicated section for the Delco ABS IIIA system (Section JF.25) with component locations, circuit operation, trouble codes, and diagnostic procedures. Before disconnecting any hydraulic lines, you must depressurize the accumulator – the manual warns about this on page 8. The trouble code list includes codes A033 and A055 with page references for the diagnostic steps. This is far more detailed than any aftermarket summary.

Bottom line: if you’re working on a Lotus S4, Esprit Turbo, or Sport 300, this catalog is the difference between ordering the right part and bolting on a mismatched bracket that leaves you chasing a brake fluid leak at 2 a.m. Access the Factory Manual and get the part numbers that match the car.