QA40507 Axle U-Joint for Closed Knuckle Dana 25, 27, 30 and 44 Axles

QA40507 Small Axle Universal Joint for Vintage Dana Spicer Closed Knuckle Front Axles is a genuine original equipment axle manufacturer, solid-cross, non-greaseable, front axle u-joint without seals for 1940s to 1975 Chevy, Dodge, Ford, GMC, IHC, and Jeep 1/2 ton and 3/4 ton light duty 4x4s with standard Dana 44 closed knuckle front drive axles. Also fits Ford Bronco, IHC Scout, and Jeep CJ 4x4 SUVs with Dana 25, Dana 27 and Dana 30 closed knuckle front axles. Cup diameter is 1-1/16". USA Made. (Was QU40507M).

Need More Info? Use the handy Links below to access over 40 years of Dan's product and vehicle specific Tech Notes to easily get the information you need for your vehicle's repair, maintenance, or upgrade project!

Dan the Gear Man® Tech Notes:
Specs
Lube/Grease Tip
U-Joint Size
Matching Parts
Applications

Tech Note 1: Specs
QA40507 fits Dana Spicer closed knuckle front axles shafts with an inside span between the yoke ears of 2-3/16". The cup diameter is 1-1/16". There are no seals on the cups as these axle u-joints are designed to be bathed in a semi-liquid Closed Knuckle Lubricant inside the enclosed steering knuckle. If your 4x4 has lockout hubs, you should drive the vehicle with the hubs engaged at least once monthly so the axle shaft will fling lube to the upper knuckle bearing.

Tech Note 2: Lube/Grease Tip
If the vehicle manufacturer recommended steering knuckle lubricant is not available, Dana recommends SAE 140 grade gear lubricant for the knuckles. However, straight gear lube will almost always seep past the knuckle seal which covers the inside of the tires, stains the garage floor and is unacceptable for current environmental standards. What I do, is mix SAE 250 weight gear lube with grease to make a semi-liquid lubricant which will flow into the bearings and u-joints, but not seep significantly past the seals.

Tech Note 3: U-Joint Size
By today's standards, QA40507 u-joints are undersized for Jeep size SUVs and considerably undersized for full size truck models. Since vintage vehicles that used these joints were generally lighter in weight, built with much less powerful engines, and with less transfer case low range gear reduction compared to current models, the joint size is probably at least barely adequate for most stock uses. The QA40507 solid cross gives a little extra strength, but if you are planning on putting a high torque engine and/or an extra low range transfer case in your old 4x4, the chances of having an axle shaft or u-joint break under load will be much higher than a stock vehicle.

Tech Note 4: Matching Parts
Matching Parts for QA40507 Axle U-Joint:
QU50627 Timken® Knuckle Bearing Cup
QU50628 Timken® Knuckle Bearing
QK4617 and TK50784 Knuckle Bearing Kits
QU40564 Keyed Upper King Pin Bushing for Early Dodge and IHC
QU40569 Splined Upper King Pin Bushing for Dodge and IHC
TKA4939 and QU40773 Rectangular Knuckle Shim Kits
QU20091 Trapezoid Knuckle Shim
QU40188 8 Bolt Knuckle Ball Seal
QU40025 Spindle Bushing for Axle Shaft
Chevy & GMC Shop Manuals
Dodge & Ram Shop Manuals
Ford Shop Manuals
Jeep Shop Manuals

Applications

Chevrolet/GMC:
Closed Knuckle standard Dana 44
K10/K15, K20/K25: 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969

Dodge:
Closed Knuckle standard Dana 44
W100, W200: 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971

Ford:
Closed Knuckle Dana 25:
GPW military: 1942, 1943, 1944, 1945
Closed Knuckle standard Dana 44:
F-100: 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966
F-250 with standard Model 44 Front Axle: 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975

International:
Closed Knuckle Dana 27, 30, 44:
Scout: 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971
1/2 ton and light 3/4 ton: 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975

Jeep:
Closed Knuckle Dana 25, 27, 30, and 44:
Military models M38, M38A1, M170: 1941, 1942, 1943, 1944, 1945, 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957
Most civilian Jeeps: 1945, 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971
Jeep J-Series full-size 4x4s: 1972, 1973

Studebaker:
Closed Knuckle standard Dana 44:
4x4 Pickups: 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964