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Free shipping over $100 · USA & Canada
Free shipping over $100 · USA & Canada
Fuel Injector Cup Set (Set of 8) - 2001-2004 Chevy/GMC 6.6L LB7 Duramax IC667

Injector Cup & O-Ring Set

6.6L LB7 Chevrolet / GMC Duramax

2001–2004 applications

PART # IC667

$199.98 - $199.98
$199.98
$199.98 - $199.98
$199.98
Availability:
in stock, ready to be shipped
1-Year Limited Warranty
Free shipping is available on orders over $100 shipping to the USA or Canada.

Stop LB7 Injector Cup Leaks for Good.

Leaking injector cups are one of the LB7's most notorious weak points — fuel in coolant, coolant loss, and rough running. This complete set of 8 precision-machined injector cups restores a factory-tight seal on all cylinders and is the smart companion to any LB7 injector replacement job.

  • Set of 8 — services the entire engine in one shot
  • Precision-machined for a leak-free injector-to-cup seal
  • Replace them while you're in there: essential during LB7 injector jobs
  • Direct fit for 2001-2004 Chevrolet/GMC 6.6L LB7 Duramax — replaces GM 97188463

Pairs perfectly with our LB7 injector return banjo bolt set (Part# FB667).

Your application

The right fit comes first.

Browse the compatible applications below, or check your exact vehicle before adding this product to your cart.

Check my vehicle

For 2001–2004 Chevrolet / GMC 6.6L LB7 Duramax. Confirm the LB7 engine code. OE/reference interchanges listed by the product: GM 97188463 and 904-120. The FB667 return banjo bolt set is sold separately.

Fuel Injector Cup Set (Set of 8) - 2001-2004 Chevy/GMC 6.6L LB7 Duramax

Inside the box

Know exactly what arrives.

Included components for this product.

QtyComponent
8 Fuel injector cups
16 Injector-cup O-rings
Two O-rings fitted to each cup.

Engineering details

The sleeve and its two seals.

The hollow cup surrounds the injector within the matching cylinder head. Two external O-ring grooves near the broad opening hold the supplied seals.

Injector cup and outer seals Injector cup and outer seals. Open mouth, Two outer seals, Sleeve body, Narrow end. Representative geometry, not an installation or fitment drawing. Open mouthTwo outer sealsSleeve bodyNarrow end
Simplified component illustration. Shape and included parts vary by kit.

A hollow cup profile.

The open sleeve narrows toward the injector-tip opening.

Two external seal grooves.

The paired grooves near the broad end locate the two O-rings.

Matched to the LB7.

Confirm the engine code and GM 97188463 reference before installation.

Before you order

Which applications does this product fit?

For 2001–2004 6.6L LB7 Chevrolet / GMC Duramax. Check the model, configuration and reference details in the fitment notes.

Are the O-rings included?

Yes. Sixteen O-rings are included, two per cup.

Does this fit all Duramax engines?

No. This set is for the listed 2001–2004 LB7 application.

Are return banjo bolts included?

No. The FB667 return banjo bolt set is sold separately.

Where can I find the installation procedure?

Contact XOTIC with your part number and engine details for the correct installation procedure.

What warranty is included?

This product carries a one-year limited warranty from the date of purchase, subject to XOTIC PERFORMANCE’s warranty policy.

California Proposition 65 warning

WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov

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