CARBURETOR SPACERS
Holley 4bbl. 4150/4160 Series Carb Spacers Some kits include mounting studs and nuts. Refer to manufacturer data for application-specific details.
With Hardware and Gaskets
Part No.
Height
Bore Dia.
Material Type
Notes
High-Velocity Heads HVHST4150-4AL
1"
Taper Taper Taper Taper Taper Taper Taper Taper Taper Taper Open Open Open
Aluminum Aluminum Aluminum
Dual-Plane Intakes
No No No No No No No No No No
HVHSS4150-.5AL HVHSS4150-604AL HVHSS4150-1P HVHSS4150-1AL
1/2"
—
.650"
604 Crate Motors Drag Race Only
1" 1"
Black Thermoplastic Super Sucker
Aluminum Aluminum
—
HVHSS4150-1ALW 1"
Lightweight
HVHSS4150-2P
2"
Black Thermoplastic Super Sucker
Drag Race Only
HVHSS4150-2ALW 2"
Aluminum Aluminum Aluminum Aluminum Aluminum Phenolic Phenolic
Lightweight
HVHSS4150-1DPAL HVHSS4150-2AL
1" 2"
1/2" of Spacer into Manifold Open-Plenum Manifolds
Holley
HLY717-2 HLY17-27 HLY17-62 HLY17-59 MOR64930 MOR64940 MOR64943 MOR64945 MOR64970 MOR64980 MOR64981 MOR64985 MOR64991 MOR64996 MOR65015 MOR65030
1-1/2"
12° Angle
Yes Yes Yes Yes
1"
— — — — — — — — — — — — — — 5° — — — — —
1/2" 1/2"
1.5625", 4 Hole
Moroso
1" 1"
1.75", 4-Hole
Black Thermoplastic Black Thermoplastic
No No No No No No No No No No No No No No No
Open
1/2" 1/2"
1.750", 4-Hole 1.467", 4-Hole
Phenolic Phenolic Aluminum Aluminum
2" 1" 1"
Open Open Open Open
Billet Aluminum Billet Aluminum Billet Aluminum Billet Aluminum
1/2"
1" 1"
1.696", 4-Hole 1.75", 4-Hole
1/2"
Open Open
Wood Fiber Laminate
Wedge
Aluminum
Mr. Gasket
MRG97 MRG98
1/4" 1/2" 1/2"
1.670" 1.670"
Heat Dissipaters Heat Dissipaters Heat Dissipaters
MRG98A MRG3405 MRG3710 MRG4945 MRG6005 MRG6006 MRG6007
Open Open
1"
Black Thermoplastic
Yes
1/2"
1.670"
Heat Shields
No
1" 1" 1" 2"
Open Open
Aluminum Aluminum Aluminum Aluminum
With 3/8" PCV Tube 1/4" Knock Out Hole
Yes Yes Yes Yes
1.625", 4-Hole
— —
Open
ProForm
PFM67160C
1"
Tapered
Phenolic
Includes Inserts
Yes
Racing Power Company RPCR2048 2"
4-Hole
Aluminum Aluminum Aluminum Phenolic Phenolic Phenolic Phenolic Phenolic Phenolic Aluminum Aluminum Aluminum Aluminum Aluminum Aluminum
Ported Ported
Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
RPCR2081 RPCR2103 RPCR9134 RPCR9135 RPCR9136 RPCR9137 RPCR9138 RPCR9139 TRA2048 TRA2063 TRA2081 TRA2084 TRA2103 TRA2280 TRA2461 TRA2529 TRA2531 TRA3200
2" 1" 1" 2" 1" 2"
Open Open
With PCV Fitting Kit
4-Hole 4-Hole
Black, Ported Black, Ported
Open Open
Black Black
1/2" 1/2"
4-Hole
Black, Ported
Open
Black
Trans Dapt
2"
1-11/16", 4-Hole
— — — —
3/8"
Open Open Open Open
2" 1" 1" 2" 1" 1"
With 3" PCV Tube
3/8"
4-Hole
Open
Black Thermoplastic
—
4-Hole
Phenolic
Swirl Torque, PCV Port
—
Black Thermoplastic
Swirl Torque
1-1/2"
Open
Billet Aluminum
—
587 2021-22 ENGINE BUILDER CATALOG
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