Exhibit 4.1


 


NUMBER OF UNITS U-[●]


SEE REVERSE FOR CERTAIN DEFINITIONS


CUSIP [●]


 


ZIMMER ENERGY TRANSITION ACQUISITION CORP.

  


UNITS CONSISTING OF ONE SHARE OF CLASS A COMMON
STOCK AND

ONE-THIRD OF ONE WARRANT, EACH WHOLE WARRANT ENTITLING THE HOLDER TO PURCHASE ONE SHARE OF CLASS A COMMON STOCK


 


THIS CERTIFIES THAT ______________________ is the owner of ______________________Units. 


 


Each Unit (“Unit”) consists
of one (1) share of Class A common stock, par value $0.0001 per share (“Common Stock”), of Zimmer Energy Transition
Acquisition Corp., a Delaware corporation (the “Company”) and one-third (1/3) of one redeemable warrant (each whole
warrant, a “Warrant”). Each whole Warrant entitles the holder to purchase one (1) share (subject to adjustment) of
Common Stock for $11.50 per share (subject to adjustment). Only whole Warrants are exercisable. Each whole Warrant will become exercisable
on the later of (i) thirty (30) days after the Company’s completion of a merger, capital stock exchange, asset acquisition, stock
purchase, reorganization or other similar business combination with one or more businesses (each a “Business Combination”),
and (ii) twelve (12) months from the closing of the Company’s initial public offering, and will expire unless exercised before
5:00 p.m., New York City Time, on the date that is five (5) years after the date on which the Company completes its initial Business
Combination, or earlier upon redemption or liquidation (the “Expiration Date”). The Common Stock and Warrants comprising
the Units represented by this certificate are not transferable separately prior to ______, 2021, unless Citigroup Global Markets Inc.
elects to allow earlier separate trading, subject to the Company’s filing of a Current Report on Form 8-K with the Securities and
Exchange Commission containing an audited balance sheet reflecting the Company’s receipt of the gross proceeds of the Company’s
initial public offering and issuing a press release announcing when separate trading will begin. No fractional Warrants will be issued
upon separation of the Units. The terms of the Warrants are governed by a Warrant Agreement, dated as of ____________, 2021, between
the Company and Continental Stock Transfer & Trust Company, as Warrant Agent, and are subject to the terms and provisions contained
therein, all of which terms and provisions the holder of this certificate consents to by acceptance hereof. Copies of the Warrant Agreement
are on file at the office of the Warrant Agent at One State Street, New York, New York 10004, and are available to any Warrant holder
on written request and without cost. 


 


This certificate is not valid unless countersigned
by the Transfer Agent and registered by the Registrar of the Company.


 


This certificate shall be governed by and construed
in accordance with the internal laws of the State of New York.


 


Witness the facsimile signature of its duly authorized officers.


 





	 	 	 
	Chief Executive Officer	 	Chief Financial Officer
	 	 	 
	 	 	 
	Transfer Agent  	 	 


 






     


     


    

 


 







ZIMMER ENERGY TRANSITION ACQUISITION CORP. 


 


The Company will furnish without charge to each
unitholder who so requests, a statement of the powers, designations, preferences and relative, participating, optional or other special
rights of each class of stock or series thereof of the Company and the qualifications, limitations, or restrictions of such preferences
and/or rights.


 


The following abbreviations, when used in the inscription
on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations:


 


	TEN COM	—	as tenants in common	UNIF GIFT MIN ACT —	Custodian
	 	 	 	 	 	 
	TEN ENT	—	as tenants by the entireties	 	(Cust)	(Minor)
	 	 	 	 	 
	JT TEN	—	as joint tenants with right of survivorship and not as tenants in common	 	
    under Uniform Gifts to Minors Act

    (State)



 


Additional abbreviations may also be used though
not in the above list.


 


For value received, __________________ hereby sell, assign and transfer
unto


 


PLEASE INSERT SOCIAL SECURITY OR


OTHER


IDENTIFYING NUMBER OF ASSIGNEE


 


(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING
ZIP CODE, OF ASSIGNEE)


 


________________________ Units represented by the within Certificate,
and does hereby irrevocably constitute and appoint


 


______________________ Attorney to transfer the said Units on the books
of the within named Company with full power of substitution in the premises.


 


Dated _________________


 


________________________________________________________


Notice: The signature to this assignment must correspond
with the name as written upon the face of the certificate in every particular, without alteration or enlargement or any change whatever.


 


Signature(s) Guaranteed:


 


_______________________________________________


 


THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION
(BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM,
PURSUANT TO S.E.C. RULE 17Ad-15 (OR ANY SUCCESSOR RULE).


 






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In each case, as more fully described in the Company’s
final prospectus dated ______________, 2021, the holder(s) of this certificate shall be entitled to receive a pro-rata portion of certain
funds held in the trust account established in connection with the Company’s initial public offering only in the event that (i)
the Company redeems the shares of Common Stock sold in its initial public offering and liquidates because it does not consummate an initial
business combination by the date set forth in the Company’s amended and restated certificate of incorporation, (ii) the Company
redeems the shares of Common Stock sold in its initial public offering in connection with a stockholder vote to amend the Company’s
amended and restated certificate of incorporation to (A) modify the substance or timing of the Company’s obligation to redeem 100%
of the Common Stock if it does not consummate an initial business combination by the date set forth in the Company’s amended and
restated certificate of incorporation or (B) with respect to any other provision relating to stockholders’ rights or pre-initial
business combination activity, or (iii) if the holder(s) seek(s) to redeem for cash his, her or its respective shares of Common Stock
in connection with a tender offer (or proxy solicitation, solely in the event the Company seeks stockholder approval of the proposed initial
business combination) setting forth the details of a proposed initial business combination. In no other circumstances shall the holder(s)
have any right or interest of any kind in or to the trust account.




 






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