Description
19974 – FULLER TRANSMISSION INSERT SPLITTER VALVE
PART NUMBER(S):
Fleet Products: 19974, 19974-G | OE: 19974, 15512, 363048C92 | Automann: 308819974
DESCRIPTION:
Model: Transmission Insert (Splitter) Valve
Vehicles: Eaton Fuller, Mack, Navistar/International manual transmission systems
• Valve Type: Transmission insert-style air valve (splitter control)
• Function: Regulates air pressure to control gear range shifts in Fuller-style manual transmissions
• Construction: Hardened metal body for extreme duty cycles
• Port Sizes: Insert-style; standard 28mm length x 12.5mm O.D.
• Weight: ~11 grams
• Mounting: Push-in installation into transmission housing
• Application: Gear shifting support in high/low range or splitter operations
• System Compatibility: Fuller 6613, 9513, 12510, 12513, 12515, 14909; Mack and Navistar manual gearboxes
• Unique Features:
– Small form factor for direct insertion
– Replaces multiple legacy and aftermarket variants
– Designed for long service life under high vibration and pressure
Applications:
Used across a wide range of Fuller and OE-derived manual transmission platforms. This insert valve enables high-efficiency gear shift control by regulating hydraulic or air pressure to actuate range/splitter transitions under load. Common in vocational and highway heavy-duty trucks.
CROSS-REFERENCE(S):
19974, FUL19974, FUL-19974, 19974NP, 19974P, 15512, 15512G, 363048C92, 363048C91, 363-048-C, 421SH163, EF36610, 36610, 3661, 4303616, FUR-19974, S-3774, S3774, NSFS19974, M1319974, DM19974, 3088-19974, 308819974, 35530643, K19974, VTC-7743, KIT03-A, SM-3716FTA cross-reference listing means this part may be a compatible replacement for these part numbers based on OEM or distributor data.
IMPORTANT INSTALLATION NOTES:
✔ Insert valve directly into transmission valve port; use light lubricant if necessary
✔ Do not overtighten or use thread sealant—this is a press-fit component
✔ Ensure air lines and ports are clean to prevent contamination
✔ Confirm compatibility with transmission model before replacement
✔ Ideal for maintenance intervals or during transmission overhauls
WHY CHOOSE FLEET PRODUCTS | KBR - HEAVY DUTY TRUCK & TRAILER PARTS?
• Canadian-owned since 1985• Trusted by fleets, mechanics, and B2B partners across North America
• Fast, Reliable Shipping Across North America
• Competitive pricing with Core Return Refunds
• Price Match Guarantee | Find a better price? We'll beat the difference by 10%!
Warranty Information
