The Texas Speed 120mm/112mm LS Throttle Body Adapter lets an oversized throttle body bolt onto a standard LS intake manifold. The CNC-machined billet adapter mounts 112mm or 120mm Nick Williams throttle bodies to intake manifolds with a 103mm throttle body opening, so a large single throttle body can be used without changing the manifold.
The adapter is machined from 6061-T6 aluminum with a smooth internal taper from 120mm down to 112mm for a clean airflow transition, and Texas Speed notes the bore can be ported further by the end user to tune airflow to the combination. It ships in a raw aluminum finish ready for use or custom finishing. Mounting hardware is not included; the adapter requires M6 x 1.0 thread, 25mm long bolts.
Specifications
- Function: Adapts 112mm and 120mm throttle bodies to 103mm LS intake manifolds
- Throttle body compatibility per Texas Speed: 112mm or 120mm Nick Williams throttle bodies
- Material: CNC machined billet 6061-T6 aluminum
- Bore: Internal taper from 120mm to 112mm; can be ported further by the end user
- Finish: Raw aluminum
- Hardware: Not included; requires M6 x 1.0 thread, 25mm long bolts
- Engine families per Texas Speed: Gen III and Gen IV LS
FAQ
What does the Texas Speed 120mm/112mm throttle body adapter do?
It mounts a 112mm or 120mm Nick Williams throttle body onto an LS intake manifold with a standard 103mm throttle body opening, providing a tapered transition between the two sizes.
Is hardware included with the Texas Speed throttle body adapter?
No. Bolts are not included. Texas Speed specifies M6 x 1.0 thread bolts 25mm long to mount the adapter and throttle body.
Can the adapter be ported to match a specific setup?
Yes. The adapter has a smooth internal taper from 120mm to 112mm and Texas Speed states it can be opened up further by the end user to fine-tune airflow.
What is the adapter made from and how is it finished?
It is CNC machined from billet 6061-T6 aluminum and shipped in a raw aluminum finish, ready to install as-is or to be polished, anodized or coated by the owner.
Which engines can use the 120mm/112mm throttle body adapter?
Texas Speed lists the adapter for Gen III and Gen IV LS engines running an intake manifold with a 103mm throttle body opening. It is matched to the manifold flange rather than to a specific vehicle.
