What engines were available on the 1990 Ford Bronco?

Three engines: 4.9L EFI (300) I-6, 5.0L EFI (302) V-8, and 5.8L EFI (351) V-8, paired with a 5-speed manual O/D, automatic O/D, or electronic 4-speed automatic depending on engine.

What axle ratios were offered on the 1990 Bronco?

3.08, 3.55, and 4.10 ratios in regular and limited-slip versions, with axle codes X18 (3.08), X19 (3.55), XH8 (3.08 LS), XH9 (3.55 LS), and XH5 (4.10 LS).

Was the 3.08 axle available with all setups?

No. The 3.08 (X18/XH8) was only standard/optional with the 4.9L I-6 5-speed manual in 49 states, and a footnote says it was not available for performance-intensive applications or with 31 x 10.50R tires.

What do option codes 952 and 954 mean on a 1990 Bronco?

952 is the Deluxe Two-Tone paint option and 954 is the Victoria Two-Tone paint option, as shown in the two-tone paint illustrations.

What note applies to the 5.8L EFI (351) V-8 with the electronic 4-speed automatic (44E)?

Footnote (1) states it was available as an upgrade with Eddie Bauer.

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1990 Ford Bronco Engine/Transmission/Axle Availability Chart & Axle Codes

1990 Ford Bronco engine/transmission/axle availability chart with axle ratio and option codes

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1990 Ford Bronco order-guide chart (8-14-89): engine/transmission/axle availability across 49-state, California and high-altitude, with axle ratios 3.08/3.55/4.10, two-tone paint illustrations and HP/torque table.

AI caption January 2011 · Photo 345 of 1799

This is Page 5 of a Ford dealer/order-guide-style reference sheet dated 8-14-89 for the 1990 Model Bronco. The main table is an Engine/Transmission/Axle Availability Chart listing three engines — 4.9L EFI (300) I-6, 5.0L EFI (302) V-8, and 5.8L EFI (351) V-8 — with their transmission pairings (5-speed manual O/D, automatic O/D, electronic 4-speed automatic) and engine/transmission codes (99Y, 99N, 99H; 44M, 44E, 44T). It shows standard/optional availability of axle ratios 3.08, 3.55 and 4.10 in regular and limited-slip forms (axle codes X18, X19, XH8, XH9, XH5) for 49-state, California, and high-altitude configurations. Footnotes note the 5.8L/44E combination is available as an upgrade with Eddie Bauer, the 3.08 axle is not available for performance-intensive applications or with 31x10.50R tires, and the manual has a 3.90 first gear. A Fuel Economy section and an Engine Horsepower and Torque Ratings section are laid out but the numeric values were not printed (blank columns). The page ends with Two-Tone Paint Illustrations: Deluxe Two-Tone (option code 952) and Victoria Two-Tone (option code 954), with a body color/accent color legend.

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Frequently asked questions

What engines were available on the 1990 Ford Bronco?: Three engines: 4.9L EFI (300) I-6, 5.0L EFI (302) V-8, and 5.8L EFI (351) V-8, paired with a 5-speed manual O/D, automatic O/D, or electronic 4-speed automatic depending on engine.
What axle ratios were offered on the 1990 Bronco?: 3.08, 3.55, and 4.10 ratios in regular and limited-slip versions, with axle codes X18 (3.08), X19 (3.55), XH8 (3.08 LS), XH9 (3.55 LS), and XH5 (4.10 LS).
Was the 3.08 axle available with all setups?: No. The 3.08 (X18/XH8) was only standard/optional with the 4.9L I-6 5-speed manual in 49 states, and a footnote says it was not available for performance-intensive applications or with 31 x 10.50R tires.
What do option codes 952 and 954 mean on a 1990 Bronco?: 952 is the Deluxe Two-Tone paint option and 954 is the Victoria Two-Tone paint option, as shown in the two-tone paint illustrations.
What note applies to the 5.8L EFI (351) V-8 with the electronic 4-speed automatic (44E)?: Footnote (1) states it was available as an upgrade with Eddie Bauer.