Diesel Engine Replacement

Questions & Answers / Clarifications

This document provides answers to vendor questions regarding the "Diesel Engine Replacement" solicitation (Solicitation No. FA480026Q0063).

• Engine Identification: To ensure the correct replacement engine is provided, bidders must use the core engine serial number (13-digits) of the engine being replaced. The current Hatz engine's serial number is 0801895003928.
• Included Components: The product specifications list items such as a digital panel voltmeter, digital panel ammeter, load channel switches, mains switch, LED indicators, 28V switch, green start button, and red stop button. These items are not provided by Hatz and are intended to be reused from the existing engine. They are listed for compatibility purposes only and are not required to be shipped with the replacement engine.

This Q&A document clarifies specific requirements related to engine identification and the inclusion of certain components, which bidders should consider when preparing their proposals.

Statement of Requirement (SOR)

To procure one replacement Hatz Diesel Engine, model 4H50TIC, to restore the full operational capability of a Pressurized Cabin Leakage Tester (CPT) used by the 1st Maintenance Squadron (1 MXS) at Joint Base Langley-Eustis. The CPT is critical for servicing F-22 fighter aircraft.

• Procurement of one (1) Hatz Diesel Engine, Model 4H50TIC or equivalent.

• The engine is needed as a "like-for-like" replacement for a failed engine in the CPT.

• Engine Model: Hatz Diesel Engine, 4H50TIC or equivalent.

• Number of Cylinders: 4

• Bore/Stroke: 102/105

• Displacement: 3432

• Compression Ratio: 18:1

• Ignition Order: 1-3-4-2

• Direction of Rotation: Anticlockwise / Flywheel Side

• Cooling Air Required at 3000 RPM: 49

• Combust Air Required at 3000 RPM: 5.2

• Net Weight: 316.336kg

• Includes specific panel voltmeter, ammeter, channel switches, mains switch, LED indicators, 28V switch, start button, and stop button.

• Delivery to be made on or before 15 May 2026.

• Shipping instructions and contact information for 1st Maintenance Squadron (1 MXS) are provided.

• Operational Security (OPSEC) awareness is required if installation occurs in a Government facility.

• Prompt reporting of any mishaps involving Government property damage or injury is mandatory.

• Contractor personnel require installation access passes for DoD installations, with specific procedures and timelines for obtaining and managing these passes.

• This document references "Request for Quotations (RFQ) No. FA480026Q0063."

Solicitation / RFP / RFQ

This is a combined synopsis/solicitation for commercial products or services for Diesel Engine Replacement at Langley AFB, VA. The 633d Contracting Squadron is issuing this Request for Quotation (RFQ) as the only solicitation; no separate written solicitation will be issued. The acquisition is set aside for small business concerns.

• Procurement of a Diesel Engine Replacement.

• Detailed specifications are provided in the attached Statement of Requirement (SOR).

• Offerors must provide an itemized quotation on company letterhead, including supporting specification sheets and pictures.

• The contract type is not explicitly stated, but it will be awarded based on the lowest-priced, technically acceptable offer.

• The quotation must be valid for at least 30 days after submission.

• Due Date: Offers are due no later than 5:00 PM EST on 8 May 2026. Late offers will not be accepted.

• Questions Deadline: Questions regarding clarification must be submitted to Erika Allen via email by 5:00 PM EST on 4 May 2026.

• Submission Method: Submit offers via email to erika.allen.2@us.af.mil.

• Evaluation: Award will be made to the responsible Offeror whose offer is technically acceptable and the lowest-priced.

• This acquisition is set aside for small business concerns.

• Contractors must be registered in the Department of Defense System for Award Management (SAM) database to be eligible for award.

• The solicitation incorporates provisions and clauses by reference, accessible electronically at www.acquisition.gov.

• Attachment 1 is the Statement of Requirement (SOR) which outlines the specifications.